Home / 19,878.18-27,432.17-10,926.51

Finding the Fourth Proportional to 19,878.18, 27,432.17 and 10,926.51

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Solution

The fourth proportional to 19,878.18, 27,432.17 and 10,926.51 is: 15,078.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.18 : 27,432.17 = 10,926.51 : x
  2. Step 2: Convert to fraction form
    19,878.18/27,432.17 = 10,926.51/x
  3. Step 3: Cross multiply
    19,878.18x = 27,432.17 × 10,926.51
  4. Step 4: Simplify right side
    19,878.18x = 299,737,879.83
  5. Step 5: Solve for x
    x = 299,737,879.83/19,878.18
  6. Step 6: Final answer
    x = 15,078.74

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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.