Home / 12,639.23-17,445.60-7,335.75

Finding the Fourth Proportional to 12,639.23, 17,445.60 and 7,335.75

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Solution

The fourth proportional to 12,639.23, 17,445.60 and 7,335.75 is: 10,125.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.23 : 17,445.60 = 7,335.75 : x
  2. Step 2: Convert to fraction form
    12,639.23/17,445.60 = 7,335.75/x
  3. Step 3: Cross multiply
    12,639.23x = 17,445.60 × 7,335.75
  4. Step 4: Simplify right side
    12,639.23x = 127,976,560.20
  5. Step 5: Solve for x
    x = 127,976,560.20/12,639.23
  6. Step 6: Final answer
    x = 10,125.35

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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.