Home / 13,458.87-20,188.47-4,693.78

Finding the Fourth Proportional to 13,458.87, 20,188.47 and 4,693.78

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Solution

The fourth proportional to 13,458.87, 20,188.47 and 4,693.78 is: 7,040.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458.87 : 20,188.47 = 4,693.78 : x
  2. Step 2: Convert to fraction form
    13,458.87/20,188.47 = 4,693.78/x
  3. Step 3: Cross multiply
    13,458.87x = 20,188.47 × 4,693.78
  4. Step 4: Simplify right side
    13,458.87x = 94,760,279.55
  5. Step 5: Solve for x
    x = 94,760,279.55/13,458.87
  6. Step 6: Final answer
    x = 7,040.73

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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.