Home / 30,531.20-42,136.96-17,957.12

Finding the Fourth Proportional to 30,531.20, 42,136.96 and 17,957.12

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Solution

The fourth proportional to 30,531.20, 42,136.96 and 17,957.12 is: 24,783.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,531.20 : 42,136.96 = 17,957.12 : x
  2. Step 2: Convert to fraction form
    30,531.20/42,136.96 = 17,957.12/x
  3. Step 3: Cross multiply
    30,531.20x = 42,136.96 × 17,957.12
  4. Step 4: Simplify right side
    30,531.20x = 756,658,447.16
  5. Step 5: Solve for x
    x = 756,658,447.16/30,531.20
  6. Step 6: Final answer
    x = 24,783.12

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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.