Home / 15,132.09-20,870.46-12,901.35

Finding the Fourth Proportional to 15,132.09, 20,870.46 and 12,901.35

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Solution

The fourth proportional to 15,132.09, 20,870.46 and 12,901.35 is: 17,793.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,132.09 : 20,870.46 = 12,901.35 : x
  2. Step 2: Convert to fraction form
    15,132.09/20,870.46 = 12,901.35/x
  3. Step 3: Cross multiply
    15,132.09x = 20,870.46 × 12,901.35
  4. Step 4: Simplify right side
    15,132.09x = 269,257,004.77
  5. Step 5: Solve for x
    x = 269,257,004.77/15,132.09
  6. Step 6: Final answer
    x = 17,793.78

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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.