Home / 15,502.78-21,394.26-9,531.05

Finding the Fourth Proportional to 15,502.78, 21,394.26 and 9,531.05

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Solution

The fourth proportional to 15,502.78, 21,394.26 and 9,531.05 is: 13,153.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,502.78 : 21,394.26 = 9,531.05 : x
  2. Step 2: Convert to fraction form
    15,502.78/21,394.26 = 9,531.05/x
  3. Step 3: Cross multiply
    15,502.78x = 21,394.26 × 9,531.05
  4. Step 4: Simplify right side
    15,502.78x = 203,909,761.77
  5. Step 5: Solve for x
    x = 203,909,761.77/15,502.78
  6. Step 6: Final answer
    x = 13,153.11

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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.