Home / 18,681.20-25,755.26-15,482.50

Finding the Fourth Proportional to 18,681.20, 25,755.26 and 15,482.50

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Solution

The fourth proportional to 18,681.20, 25,755.26 and 15,482.50 is: 21,345.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,681.20 : 25,755.26 = 15,482.50 : x
  2. Step 2: Convert to fraction form
    18,681.20/25,755.26 = 15,482.50/x
  3. Step 3: Cross multiply
    18,681.20x = 25,755.26 × 15,482.50
  4. Step 4: Simplify right side
    18,681.20x = 398,755,812.95
  5. Step 5: Solve for x
    x = 398,755,812.95/18,681.20
  6. Step 6: Final answer
    x = 21,345.30

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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.