Home / 31,136.04-42,967.62-16,989.12

Finding the Fourth Proportional to 31,136.04, 42,967.62 and 16,989.12

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Solution

The fourth proportional to 31,136.04, 42,967.62 and 16,989.12 is: 23,444.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,136.04 : 42,967.62 = 16,989.12 : x
  2. Step 2: Convert to fraction form
    31,136.04/42,967.62 = 16,989.12/x
  3. Step 3: Cross multiply
    31,136.04x = 42,967.62 × 16,989.12
  4. Step 4: Simplify right side
    31,136.04x = 729,982,052.29
  5. Step 5: Solve for x
    x = 729,982,052.29/31,136.04
  6. Step 6: Final answer
    x = 23,444.92

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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.