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Finding the Fourth Proportional to 14,457.10, 19,947.15 and 8,487.61

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Solution

The fourth proportional to 14,457.10, 19,947.15 and 8,487.61 is: 11,710.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,457.10 : 19,947.15 = 8,487.61 : x
  2. Step 2: Convert to fraction form
    14,457.10/19,947.15 = 8,487.61/x
  3. Step 3: Cross multiply
    14,457.10x = 19,947.15 × 8,487.61
  4. Step 4: Simplify right side
    14,457.10x = 169,303,624.11
  5. Step 5: Solve for x
    x = 169,303,624.11/14,457.10
  6. Step 6: Final answer
    x = 11,710.76

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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.