Home / 15,125.14-20,877.24-9,820.72

Finding the Fourth Proportional to 15,125.14, 20,877.24 and 9,820.72

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Solution

The fourth proportional to 15,125.14, 20,877.24 and 9,820.72 is: 13,555.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,125.14 : 20,877.24 = 9,820.72 : x
  2. Step 2: Convert to fraction form
    15,125.14/20,877.24 = 9,820.72/x
  3. Step 3: Cross multiply
    15,125.14x = 20,877.24 × 9,820.72
  4. Step 4: Simplify right side
    15,125.14x = 205,029,528.41
  5. Step 5: Solve for x
    x = 205,029,528.41/15,125.14
  6. Step 6: Final answer
    x = 13,555.55

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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.