Home / 15,631.52-21,572.08-8,558

Finding the Fourth Proportional to 15,631.52, 21,572.08 and 8,558

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Solution

The fourth proportional to 15,631.52, 21,572.08 and 8,558 is: 11,810.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,631.52 : 21,572.08 = 8,558 : x
  2. Step 2: Convert to fraction form
    15,631.52/21,572.08 = 8,558/x
  3. Step 3: Cross multiply
    15,631.52x = 21,572.08 × 8,558
  4. Step 4: Simplify right side
    15,631.52x = 184,613,860.64
  5. Step 5: Solve for x
    x = 184,613,860.64/15,631.52
  6. Step 6: Final answer
    x = 11,810.36

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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.