Home / 14,457.68-19,951.90-8,170.20

Finding the Fourth Proportional to 14,457.68, 19,951.90 and 8,170.20

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Solution

The fourth proportional to 14,457.68, 19,951.90 and 8,170.20 is: 11,275.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,457.68 : 19,951.90 = 8,170.20 : x
  2. Step 2: Convert to fraction form
    14,457.68/19,951.90 = 8,170.20/x
  3. Step 3: Cross multiply
    14,457.68x = 19,951.90 × 8,170.20
  4. Step 4: Simplify right side
    14,457.68x = 163,011,013.38
  5. Step 5: Solve for x
    x = 163,011,013.38/14,457.68
  6. Step 6: Final answer
    x = 11,275.05

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Half scale
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Double scale
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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.