Home / 15,308.52-21,120.12-9,641.76

Finding the Fourth Proportional to 15,308.52, 21,120.12 and 9,641.76

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Solution

The fourth proportional to 15,308.52, 21,120.12 and 9,641.76 is: 13,302.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,308.52 : 21,120.12 = 9,641.76 : x
  2. Step 2: Convert to fraction form
    15,308.52/21,120.12 = 9,641.76/x
  3. Step 3: Cross multiply
    15,308.52x = 21,120.12 × 9,641.76
  4. Step 4: Simplify right side
    15,308.52x = 203,635,128.21
  5. Step 5: Solve for x
    x = 203,635,128.21/15,308.52
  6. Step 6: Final answer
    x = 13,302.08

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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.