Home / 10,542.15-15,830.13-6,989.69

Finding the Fourth Proportional to 10,542.15, 15,830.13 and 6,989.69

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Solution

The fourth proportional to 10,542.15, 15,830.13 and 6,989.69 is: 10,495.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,542.15 : 15,830.13 = 6,989.69 : x
  2. Step 2: Convert to fraction form
    10,542.15/15,830.13 = 6,989.69/x
  3. Step 3: Cross multiply
    10,542.15x = 15,830.13 × 6,989.69
  4. Step 4: Simplify right side
    10,542.15x = 110,647,767.15
  5. Step 5: Solve for x
    x = 110,647,767.15/10,542.15
  6. Step 6: Final answer
    x = 10,495.75

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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.