Home / 10,119.52-15,156.36-5,431.36

Finding the Fourth Proportional to 10,119.52, 15,156.36 and 5,431.36

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Solution

The fourth proportional to 10,119.52, 15,156.36 and 5,431.36 is: 8,134.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,119.52 : 15,156.36 = 5,431.36 : x
  2. Step 2: Convert to fraction form
    10,119.52/15,156.36 = 5,431.36/x
  3. Step 3: Cross multiply
    10,119.52x = 15,156.36 × 5,431.36
  4. Step 4: Simplify right side
    10,119.52x = 82,319,647.45
  5. Step 5: Solve for x
    x = 82,319,647.45/10,119.52
  6. Step 6: Final answer
    x = 8,134.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.