Home / 30,661.12-42,312.28-17,232.92

Finding the Fourth Proportional to 30,661.12, 42,312.28 and 17,232.92

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Solution

The fourth proportional to 30,661.12, 42,312.28 and 17,232.92 is: 23,781.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,661.12 : 42,312.28 = 17,232.92 : x
  2. Step 2: Convert to fraction form
    30,661.12/42,312.28 = 17,232.92/x
  3. Step 3: Cross multiply
    30,661.12x = 42,312.28 × 17,232.92
  4. Step 4: Simplify right side
    30,661.12x = 729,164,136.26
  5. Step 5: Solve for x
    x = 729,164,136.26/30,661.12
  6. Step 6: Final answer
    x = 23,781.39

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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.