Home / 10,901.15-15,041.28-6,421.85

Finding the Fourth Proportional to 10,901.15, 15,041.28 and 6,421.85

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Solution

The fourth proportional to 10,901.15, 15,041.28 and 6,421.85 is: 8,860.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,901.15 : 15,041.28 = 6,421.85 : x
  2. Step 2: Convert to fraction form
    10,901.15/15,041.28 = 6,421.85/x
  3. Step 3: Cross multiply
    10,901.15x = 15,041.28 × 6,421.85
  4. Step 4: Simplify right side
    10,901.15x = 96,592,843.97
  5. Step 5: Solve for x
    x = 96,592,843.97/10,901.15
  6. Step 6: Final answer
    x = 8,860.79

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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.