Home / 18,721.04-25,848.03-15,151.88

Finding the Fourth Proportional to 18,721.04, 25,848.03 and 15,151.88

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Solution

The fourth proportional to 18,721.04, 25,848.03 and 15,151.88 is: 20,920.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.04 : 25,848.03 = 15,151.88 : x
  2. Step 2: Convert to fraction form
    18,721.04/25,848.03 = 15,151.88/x
  3. Step 3: Cross multiply
    18,721.04x = 25,848.03 × 15,151.88
  4. Step 4: Simplify right side
    18,721.04x = 391,646,119.56
  5. Step 5: Solve for x
    x = 391,646,119.56/18,721.04
  6. Step 6: Final answer
    x = 20,920.11

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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.