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Finding the Fourth Proportional to 14,457.92, 19,952.08 and 8,489.66

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Solution

The fourth proportional to 14,457.92, 19,952.08 and 8,489.66 is: 11,715.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,457.92 : 19,952.08 = 8,489.66 : x
  2. Step 2: Convert to fraction form
    14,457.92/19,952.08 = 8,489.66/x
  3. Step 3: Cross multiply
    14,457.92x = 19,952.08 × 8,489.66
  4. Step 4: Simplify right side
    14,457.92x = 169,386,254.51
  5. Step 5: Solve for x
    x = 169,386,254.51/14,457.92
  6. Step 6: Final answer
    x = 11,715.81

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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.