Home / 29,443.76-40,638.48-18,118.88

Finding the Fourth Proportional to 29,443.76, 40,638.48 and 18,118.88

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Solution

The fourth proportional to 29,443.76, 40,638.48 and 18,118.88 is: 25,007.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,443.76 : 40,638.48 = 18,118.88 : x
  2. Step 2: Convert to fraction form
    29,443.76/40,638.48 = 18,118.88/x
  3. Step 3: Cross multiply
    29,443.76x = 40,638.48 × 18,118.88
  4. Step 4: Simplify right side
    29,443.76x = 736,323,742.50
  5. Step 5: Solve for x
    x = 736,323,742.50/29,443.76
  6. Step 6: Final answer
    x = 25,007.80

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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.