Home / 15,561.74-21,475.19-8,488.16

Finding the Fourth Proportional to 15,561.74, 21,475.19 and 8,488.16

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Solution

The fourth proportional to 15,561.74, 21,475.19 and 8,488.16 is: 11,713.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,561.74 : 21,475.19 = 8,488.16 : x
  2. Step 2: Convert to fraction form
    15,561.74/21,475.19 = 8,488.16/x
  3. Step 3: Cross multiply
    15,561.74x = 21,475.19 × 8,488.16
  4. Step 4: Simplify right side
    15,561.74x = 182,284,741.37
  5. Step 5: Solve for x
    x = 182,284,741.37/15,561.74
  6. Step 6: Final answer
    x = 11,713.65

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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.