Home / 30,663.32-42,319.12-17,235.12

Finding the Fourth Proportional to 30,663.32, 42,319.12 and 17,235.12

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Solution

The fourth proportional to 30,663.32, 42,319.12 and 17,235.12 is: 23,786.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,663.32 : 42,319.12 = 17,235.12 : x
  2. Step 2: Convert to fraction form
    30,663.32/42,319.12 = 17,235.12/x
  3. Step 3: Cross multiply
    30,663.32x = 42,319.12 × 17,235.12
  4. Step 4: Simplify right side
    30,663.32x = 729,375,111.49
  5. Step 5: Solve for x
    x = 729,375,111.49/30,663.32
  6. Step 6: Final answer
    x = 23,786.57

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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.