Home / 15,036.14-20,701.32-12,378.80

Finding the Fourth Proportional to 15,036.14, 20,701.32 and 12,378.80

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Solution

The fourth proportional to 15,036.14, 20,701.32 and 12,378.80 is: 17,042.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,036.14 : 20,701.32 = 12,378.80 : x
  2. Step 2: Convert to fraction form
    15,036.14/20,701.32 = 12,378.80/x
  3. Step 3: Cross multiply
    15,036.14x = 20,701.32 × 12,378.80
  4. Step 4: Simplify right side
    15,036.14x = 256,257,500.02
  5. Step 5: Solve for x
    x = 256,257,500.02/15,036.14
  6. Step 6: Final answer
    x = 17,042.77

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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.