Home / 18,531.40-25,570.50-10,574.20

Finding the Fourth Proportional to 18,531.40, 25,570.50 and 10,574.20

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Solution

The fourth proportional to 18,531.40, 25,570.50 and 10,574.20 is: 14,590.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,531.40 : 25,570.50 = 10,574.20 : x
  2. Step 2: Convert to fraction form
    18,531.40/25,570.50 = 10,574.20/x
  3. Step 3: Cross multiply
    18,531.40x = 25,570.50 × 10,574.20
  4. Step 4: Simplify right side
    18,531.40x = 270,387,581.10
  5. Step 5: Solve for x
    x = 270,387,581.10/18,531.40
  6. Step 6: Final answer
    x = 14,590.78

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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.