Home / 15,471.23-21,350.31-8,397.65

Finding the Fourth Proportional to 15,471.23, 21,350.31 and 8,397.65

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Solution

The fourth proportional to 15,471.23, 21,350.31 and 8,397.65 is: 11,588.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,471.23 : 21,350.31 = 8,397.65 : x
  2. Step 2: Convert to fraction form
    15,471.23/21,350.31 = 8,397.65/x
  3. Step 3: Cross multiply
    15,471.23x = 21,350.31 × 8,397.65
  4. Step 4: Simplify right side
    15,471.23x = 179,292,430.77
  5. Step 5: Solve for x
    x = 179,292,430.77/15,471.23
  6. Step 6: Final answer
    x = 11,588.76

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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.