Home / 20,391.61-30,587.40-5,600.59

Finding the Fourth Proportional to 20,391.61, 30,587.40 and 5,600.59

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Solution

The fourth proportional to 20,391.61, 30,587.40 and 5,600.59 is: 8,400.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391.61 : 30,587.40 = 5,600.59 : x
  2. Step 2: Convert to fraction form
    20,391.61/30,587.40 = 5,600.59/x
  3. Step 3: Cross multiply
    20,391.61x = 30,587.40 × 5,600.59
  4. Step 4: Simplify right side
    20,391.61x = 171,307,486.57
  5. Step 5: Solve for x
    x = 171,307,486.57/20,391.61
  6. Step 6: Final answer
    x = 8,400.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.