Home / 30,439.72-42,005.70-17,010.92

Finding the Fourth Proportional to 30,439.72, 42,005.70 and 17,010.92

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Solution

The fourth proportional to 30,439.72, 42,005.70 and 17,010.92 is: 23,474.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,439.72 : 42,005.70 = 17,010.92 : x
  2. Step 2: Convert to fraction form
    30,439.72/42,005.70 = 17,010.92/x
  3. Step 3: Cross multiply
    30,439.72x = 42,005.70 × 17,010.92
  4. Step 4: Simplify right side
    30,439.72x = 714,555,602.24
  5. Step 5: Solve for x
    x = 714,555,602.24/30,439.72
  6. Step 6: Final answer
    x = 23,474.45

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Half scale
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Double scale
Find fourth proportional to 30,440.72, 42,007.08 and 17,011.92
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.