Home / 12,440.34-17,138.45-8,657.01

Finding the Fourth Proportional to 12,440.34, 17,138.45 and 8,657.01

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Solution

The fourth proportional to 12,440.34, 17,138.45 and 8,657.01 is: 11,926.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,440.34 : 17,138.45 = 8,657.01 : x
  2. Step 2: Convert to fraction form
    12,440.34/17,138.45 = 8,657.01/x
  3. Step 3: Cross multiply
    12,440.34x = 17,138.45 × 8,657.01
  4. Step 4: Simplify right side
    12,440.34x = 148,367,754.68
  5. Step 5: Solve for x
    x = 148,367,754.68/12,440.34
  6. Step 6: Final answer
    x = 11,926.34

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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.