Home / 29,539.76-40,778.52-18,211.28

Finding the Fourth Proportional to 29,539.76, 40,778.52 and 18,211.28

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Solution

The fourth proportional to 29,539.76, 40,778.52 and 18,211.28 is: 25,139.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,539.76 : 40,778.52 = 18,211.28 : x
  2. Step 2: Convert to fraction form
    29,539.76/40,778.52 = 18,211.28/x
  3. Step 3: Cross multiply
    29,539.76x = 40,778.52 × 18,211.28
  4. Step 4: Simplify right side
    29,539.76x = 742,629,045.71
  5. Step 5: Solve for x
    x = 742,629,045.71/29,539.76
  6. Step 6: Final answer
    x = 25,139.98

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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.