Home / 15,020.08-20,727.76-8,305.60

Finding the Fourth Proportional to 15,020.08, 20,727.76 and 8,305.60

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Solution

The fourth proportional to 15,020.08, 20,727.76 and 8,305.60 is: 11,461.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,020.08 : 20,727.76 = 8,305.60 : x
  2. Step 2: Convert to fraction form
    15,020.08/20,727.76 = 8,305.60/x
  3. Step 3: Cross multiply
    15,020.08x = 20,727.76 × 8,305.60
  4. Step 4: Simplify right side
    15,020.08x = 172,156,483.46
  5. Step 5: Solve for x
    x = 172,156,483.46/15,020.08
  6. Step 6: Final answer
    x = 11,461.76

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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.