Home / 18,924.42-28,398.78-12,691.47

Finding the Fourth Proportional to 18,924.42, 28,398.78 and 12,691.47

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Solution

The fourth proportional to 18,924.42, 28,398.78 and 12,691.47 is: 19,045.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,924.42 : 28,398.78 = 12,691.47 : x
  2. Step 2: Convert to fraction form
    18,924.42/28,398.78 = 12,691.47/x
  3. Step 3: Cross multiply
    18,924.42x = 28,398.78 × 12,691.47
  4. Step 4: Simplify right side
    18,924.42x = 360,422,264.41
  5. Step 5: Solve for x
    x = 360,422,264.41/18,924.42
  6. Step 6: Final answer
    x = 19,045.35

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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.