Home / 12,981.45-17,914.40-7,013.11

Finding the Fourth Proportional to 12,981.45, 17,914.40 and 7,013.11

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Solution

The fourth proportional to 12,981.45, 17,914.40 and 7,013.11 is: 9,678.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981.45 : 17,914.40 = 7,013.11 : x
  2. Step 2: Convert to fraction form
    12,981.45/17,914.40 = 7,013.11/x
  3. Step 3: Cross multiply
    12,981.45x = 17,914.40 × 7,013.11
  4. Step 4: Simplify right side
    12,981.45x = 125,635,657.78
  5. Step 5: Solve for x
    x = 125,635,657.78/12,981.45
  6. Step 6: Final answer
    x = 9,678.09

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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.