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Finding the Fourth Proportional to 12,510.05, 18,691.70 and 12,074.06

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Solution

The fourth proportional to 12,510.05, 18,691.70 and 12,074.06 is: 18,040.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,510.05 : 18,691.70 = 12,074.06 : x
  2. Step 2: Convert to fraction form
    12,510.05/18,691.70 = 12,074.06/x
  3. Step 3: Cross multiply
    12,510.05x = 18,691.70 × 12,074.06
  4. Step 4: Simplify right side
    12,510.05x = 225,684,693.66
  5. Step 5: Solve for x
    x = 225,684,693.66/12,510.05
  6. Step 6: Final answer
    x = 18,040.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.