Home / 19,878.50-27,432.39-10,926.92

Finding the Fourth Proportional to 19,878.50, 27,432.39 and 10,926.92

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Solution

The fourth proportional to 19,878.50, 27,432.39 and 10,926.92 is: 15,079.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.50 : 27,432.39 = 10,926.92 : x
  2. Step 2: Convert to fraction form
    19,878.50/27,432.39 = 10,926.92/x
  3. Step 3: Cross multiply
    19,878.50x = 27,432.39 × 10,926.92
  4. Step 4: Simplify right side
    19,878.50x = 299,751,393.78
  5. Step 5: Solve for x
    x = 299,751,393.78/19,878.50
  6. Step 6: Final answer
    x = 15,079.18

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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.