Home / 19,878.65-27,432.20-10,925.95

Finding the Fourth Proportional to 19,878.65, 27,432.20 and 10,925.95

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Solution

The fourth proportional to 19,878.65, 27,432.20 and 10,925.95 is: 15,077.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.65 : 27,432.20 = 10,925.95 : x
  2. Step 2: Convert to fraction form
    19,878.65/27,432.20 = 10,925.95/x
  3. Step 3: Cross multiply
    19,878.65x = 27,432.20 × 10,925.95
  4. Step 4: Simplify right side
    19,878.65x = 299,722,708.43
  5. Step 5: Solve for x
    x = 299,722,708.43/19,878.65
  6. Step 6: Final answer
    x = 15,077.62

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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.