Home / 29,538.76-40,764.24-18,215.72

Finding the Fourth Proportional to 29,538.76, 40,764.24 and 18,215.72

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Solution

The fourth proportional to 29,538.76, 40,764.24 and 18,215.72 is: 25,138.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,538.76 : 40,764.24 = 18,215.72 : x
  2. Step 2: Convert to fraction form
    29,538.76/40,764.24 = 18,215.72/x
  3. Step 3: Cross multiply
    29,538.76x = 40,764.24 × 18,215.72
  4. Step 4: Simplify right side
    29,538.76x = 742,549,981.85
  5. Step 5: Solve for x
    x = 742,549,981.85/29,538.76
  6. Step 6: Final answer
    x = 25,138.16

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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.