Home / 15,420.45-23,116.50-5,557.32

Finding the Fourth Proportional to 15,420.45, 23,116.50 and 5,557.32

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Solution

The fourth proportional to 15,420.45, 23,116.50 and 5,557.32 is: 8,330.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,420.45 : 23,116.50 = 5,557.32 : x
  2. Step 2: Convert to fraction form
    15,420.45/23,116.50 = 5,557.32/x
  3. Step 3: Cross multiply
    15,420.45x = 23,116.50 × 5,557.32
  4. Step 4: Simplify right side
    15,420.45x = 128,465,787.78
  5. Step 5: Solve for x
    x = 128,465,787.78/15,420.45
  6. Step 6: Final answer
    x = 8,330.87

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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.