Home / 15,697.19-21,654.64-11,439.12

Finding the Fourth Proportional to 15,697.19, 21,654.64 and 11,439.12

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Solution

The fourth proportional to 15,697.19, 21,654.64 and 11,439.12 is: 15,780.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,697.19 : 21,654.64 = 11,439.12 : x
  2. Step 2: Convert to fraction form
    15,697.19/21,654.64 = 11,439.12/x
  3. Step 3: Cross multiply
    15,697.19x = 21,654.64 × 11,439.12
  4. Step 4: Simplify right side
    15,697.19x = 247,710,121.02
  5. Step 5: Solve for x
    x = 247,710,121.02/15,697.19
  6. Step 6: Final answer
    x = 15,780.54

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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.