Home / 25,138.80-37,685.88-12,642.48

Finding the Fourth Proportional to 25,138.80, 37,685.88 and 12,642.48

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Solution

The fourth proportional to 25,138.80, 37,685.88 and 12,642.48 is: 18,952.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,138.80 : 37,685.88 = 12,642.48 : x
  2. Step 2: Convert to fraction form
    25,138.80/37,685.88 = 12,642.48/x
  3. Step 3: Cross multiply
    25,138.80x = 37,685.88 × 12,642.48
  4. Step 4: Simplify right side
    25,138.80x = 476,442,984.18
  5. Step 5: Solve for x
    x = 476,442,984.18/25,138.80
  6. Step 6: Final answer
    x = 18,952.50

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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.