Home / 15,542.31-21,447.60-8,827.08

Finding the Fourth Proportional to 15,542.31, 21,447.60 and 8,827.08

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Solution

The fourth proportional to 15,542.31, 21,447.60 and 8,827.08 is: 12,180.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,542.31 : 21,447.60 = 8,827.08 : x
  2. Step 2: Convert to fraction form
    15,542.31/21,447.60 = 8,827.08/x
  3. Step 3: Cross multiply
    15,542.31x = 21,447.60 × 8,827.08
  4. Step 4: Simplify right side
    15,542.31x = 189,319,681.01
  5. Step 5: Solve for x
    x = 189,319,681.01/15,542.31
  6. Step 6: Final answer
    x = 12,180.92

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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.