Home / 13,437.54-20,156.31-7,320.42

Finding the Fourth Proportional to 13,437.54, 20,156.31 and 7,320.42

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Solution

The fourth proportional to 13,437.54, 20,156.31 and 7,320.42 is: 10,980.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.54 : 20,156.31 = 7,320.42 : x
  2. Step 2: Convert to fraction form
    13,437.54/20,156.31 = 7,320.42/x
  3. Step 3: Cross multiply
    13,437.54x = 20,156.31 × 7,320.42
  4. Step 4: Simplify right side
    13,437.54x = 147,552,654.85
  5. Step 5: Solve for x
    x = 147,552,654.85/13,437.54
  6. Step 6: Final answer
    x = 10,980.63

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1.5x scale

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.