Home / 18,425.08-25,403.88-15,587.56

Finding the Fourth Proportional to 18,425.08, 25,403.88 and 15,587.56

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Solution

The fourth proportional to 18,425.08, 25,403.88 and 15,587.56 is: 21,491.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,425.08 : 25,403.88 = 15,587.56 : x
  2. Step 2: Convert to fraction form
    18,425.08/25,403.88 = 15,587.56/x
  3. Step 3: Cross multiply
    18,425.08x = 25,403.88 × 15,587.56
  4. Step 4: Simplify right side
    18,425.08x = 395,984,503.73
  5. Step 5: Solve for x
    x = 395,984,503.73/18,425.08
  6. Step 6: Final answer
    x = 21,491.60

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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.