Home / 13,925.04-20,872.80-8,659.92

Finding the Fourth Proportional to 13,925.04, 20,872.80 and 8,659.92

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Solution

The fourth proportional to 13,925.04, 20,872.80 and 8,659.92 is: 12,980.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,925.04 : 20,872.80 = 8,659.92 : x
  2. Step 2: Convert to fraction form
    13,925.04/20,872.80 = 8,659.92/x
  3. Step 3: Cross multiply
    13,925.04x = 20,872.80 × 8,659.92
  4. Step 4: Simplify right side
    13,925.04x = 180,756,778.18
  5. Step 5: Solve for x
    x = 180,756,778.18/13,925.04
  6. Step 6: Final answer
    x = 12,980.70

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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.