Home / 14,931.68-20,605.72-8,217.30

Finding the Fourth Proportional to 14,931.68, 20,605.72 and 8,217.30

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Solution

The fourth proportional to 14,931.68, 20,605.72 and 8,217.30 is: 11,339.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,931.68 : 20,605.72 = 8,217.30 : x
  2. Step 2: Convert to fraction form
    14,931.68/20,605.72 = 8,217.30/x
  3. Step 3: Cross multiply
    14,931.68x = 20,605.72 × 8,217.30
  4. Step 4: Simplify right side
    14,931.68x = 169,323,341.87
  5. Step 5: Solve for x
    x = 169,323,341.87/14,931.68
  6. Step 6: Final answer
    x = 11,339.88

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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.