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Finding the Fourth Proportional to 22,491, 31,037.58 and 12,555

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Solution

The fourth proportional to 22,491, 31,037.58 and 12,555 is: 17,325.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,491 : 31,037.58 = 12,555 : x
  2. Step 2: Convert to fraction form
    22,491/31,037.58 = 12,555/x
  3. Step 3: Cross multiply
    22,491x = 31,037.58 × 12,555
  4. Step 4: Simplify right side
    22,491x = 389,676,816.90
  5. Step 5: Solve for x
    x = 389,676,816.90/22,491
  6. Step 6: Final answer
    x = 17,325.90

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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.