Home / 25,139.20-37,708.80-13,446.40

Finding the Fourth Proportional to 25,139.20, 37,708.80 and 13,446.40

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Solution

The fourth proportional to 25,139.20, 37,708.80 and 13,446.40 is: 20,169.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,139.20 : 37,708.80 = 13,446.40 : x
  2. Step 2: Convert to fraction form
    25,139.20/37,708.80 = 13,446.40/x
  3. Step 3: Cross multiply
    25,139.20x = 37,708.80 × 13,446.40
  4. Step 4: Simplify right side
    25,139.20x = 507,047,608.32
  5. Step 5: Solve for x
    x = 507,047,608.32/25,139.20
  6. Step 6: Final answer
    x = 20,169.60

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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.