Home / 42,492.28-63,738.40-20,238.18

Finding the Fourth Proportional to 42,492.28, 63,738.40 and 20,238.18

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Solution

The fourth proportional to 42,492.28, 63,738.40 and 20,238.18 is: 30,357.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,492.28 : 63,738.40 = 20,238.18 : x
  2. Step 2: Convert to fraction form
    42,492.28/63,738.40 = 20,238.18/x
  3. Step 3: Cross multiply
    42,492.28x = 63,738.40 × 20,238.18
  4. Step 4: Simplify right side
    42,492.28x = 1,289,949,212.11
  5. Step 5: Solve for x
    x = 1,289,949,212.11/42,492.28
  6. Step 6: Final answer
    x = 30,357.26

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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.