Home / 15,776.28-21,771.92-8,703.16

Finding the Fourth Proportional to 15,776.28, 21,771.92 and 8,703.16

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Solution

The fourth proportional to 15,776.28, 21,771.92 and 8,703.16 is: 12,010.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,776.28 : 21,771.92 = 8,703.16 : x
  2. Step 2: Convert to fraction form
    15,776.28/21,771.92 = 8,703.16/x
  3. Step 3: Cross multiply
    15,776.28x = 21,771.92 × 8,703.16
  4. Step 4: Simplify right side
    15,776.28x = 189,484,470.60
  5. Step 5: Solve for x
    x = 189,484,470.60/15,776.28
  6. Step 6: Final answer
    x = 12,010.72

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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.