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Finding the Fourth Proportional to 16,457.79, 22,711.68 and 8,904.15

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Solution

The fourth proportional to 16,457.79, 22,711.68 and 8,904.15 is: 12,287.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,457.79 : 22,711.68 = 8,904.15 : x
  2. Step 2: Convert to fraction form
    16,457.79/22,711.68 = 8,904.15/x
  3. Step 3: Cross multiply
    16,457.79x = 22,711.68 × 8,904.15
  4. Step 4: Simplify right side
    16,457.79x = 202,228,205.47
  5. Step 5: Solve for x
    x = 202,228,205.47/16,457.79
  6. Step 6: Final answer
    x = 12,287.69

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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.