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Finding the Fourth Proportional to 15,776.70, 21,764.73 and 9,060.66

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Solution

The fourth proportional to 15,776.70, 21,764.73 and 9,060.66 is: 12,499.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,776.70 : 21,764.73 = 9,060.66 : x
  2. Step 2: Convert to fraction form
    15,776.70/21,764.73 = 9,060.66/x
  3. Step 3: Cross multiply
    15,776.70x = 21,764.73 × 9,060.66
  4. Step 4: Simplify right side
    15,776.70x = 197,202,818.52
  5. Step 5: Solve for x
    x = 197,202,818.52/15,776.70
  6. Step 6: Final answer
    x = 12,499.62

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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.