Home / 31,136.64-42,968.16-16,989.24

Finding the Fourth Proportional to 31,136.64, 42,968.16 and 16,989.24

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Solution

The fourth proportional to 31,136.64, 42,968.16 and 16,989.24 is: 23,444.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,136.64 : 42,968.16 = 16,989.24 : x
  2. Step 2: Convert to fraction form
    31,136.64/42,968.16 = 16,989.24/x
  3. Step 3: Cross multiply
    31,136.64x = 42,968.16 × 16,989.24
  4. Step 4: Simplify right side
    31,136.64x = 729,996,382.60
  5. Step 5: Solve for x
    x = 729,996,382.60/31,136.64
  6. Step 6: Final answer
    x = 23,444.93

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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.