Home / 14,913.87-20,581.19-8,540.55

Finding the Fourth Proportional to 14,913.87, 20,581.19 and 8,540.55

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Solution

The fourth proportional to 14,913.87, 20,581.19 and 8,540.55 is: 11,785.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,913.87 : 20,581.19 = 8,540.55 : x
  2. Step 2: Convert to fraction form
    14,913.87/20,581.19 = 8,540.55/x
  3. Step 3: Cross multiply
    14,913.87x = 20,581.19 × 8,540.55
  4. Step 4: Simplify right side
    14,913.87x = 175,774,639.55
  5. Step 5: Solve for x
    x = 175,774,639.55/14,913.87
  6. Step 6: Final answer
    x = 11,785.98

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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.