Home / 30,439.14-42,005.90-17,010.39

Finding the Fourth Proportional to 30,439.14, 42,005.90 and 17,010.39

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Solution

The fourth proportional to 30,439.14, 42,005.90 and 17,010.39 is: 23,474.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,439.14 : 42,005.90 = 17,010.39 : x
  2. Step 2: Convert to fraction form
    30,439.14/42,005.90 = 17,010.39/x
  3. Step 3: Cross multiply
    30,439.14x = 42,005.90 × 17,010.39
  4. Step 4: Simplify right side
    30,439.14x = 714,536,845.67
  5. Step 5: Solve for x
    x = 714,536,845.67/30,439.14
  6. Step 6: Final answer
    x = 23,474.28

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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.