Home / 18,688.59-25,763.46-14,702.78

Finding the Fourth Proportional to 18,688.59, 25,763.46 and 14,702.78

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Solution

The fourth proportional to 18,688.59, 25,763.46 and 14,702.78 is: 20,268.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.59 : 25,763.46 = 14,702.78 : x
  2. Step 2: Convert to fraction form
    18,688.59/25,763.46 = 14,702.78/x
  3. Step 3: Cross multiply
    18,688.59x = 25,763.46 × 14,702.78
  4. Step 4: Simplify right side
    18,688.59x = 378,794,484.42
  5. Step 5: Solve for x
    x = 378,794,484.42/18,688.59
  6. Step 6: Final answer
    x = 20,268.76

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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.