Home / 18,259.28-25,191.05-13,490.70

Finding the Fourth Proportional to 18,259.28, 25,191.05 and 13,490.70

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Solution

The fourth proportional to 18,259.28, 25,191.05 and 13,490.70 is: 18,612.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,259.28 : 25,191.05 = 13,490.70 : x
  2. Step 2: Convert to fraction form
    18,259.28/25,191.05 = 13,490.70/x
  3. Step 3: Cross multiply
    18,259.28x = 25,191.05 × 13,490.70
  4. Step 4: Simplify right side
    18,259.28x = 339,844,830.78
  5. Step 5: Solve for x
    x = 339,844,830.78/18,259.28
  6. Step 6: Final answer
    x = 18,612.18

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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.