Home / 40,429.80-60,647.40-13,775.40

Finding the Fourth Proportional to 40,429.80, 60,647.40 and 13,775.40

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Solution

The fourth proportional to 40,429.80, 60,647.40 and 13,775.40 is: 20,664.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,429.80 : 60,647.40 = 13,775.40 : x
  2. Step 2: Convert to fraction form
    40,429.80/60,647.40 = 13,775.40/x
  3. Step 3: Cross multiply
    40,429.80x = 60,647.40 × 13,775.40
  4. Step 4: Simplify right side
    40,429.80x = 835,442,193.96
  5. Step 5: Solve for x
    x = 835,442,193.96/40,429.80
  6. Step 6: Final answer
    x = 20,664.02

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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.