Home / 10,919.10-15,068.36-6,442.86

Finding the Fourth Proportional to 10,919.10, 15,068.36 and 6,442.86

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Solution

The fourth proportional to 10,919.10, 15,068.36 and 6,442.86 is: 8,891.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.10 : 15,068.36 = 6,442.86 : x
  2. Step 2: Convert to fraction form
    10,919.10/15,068.36 = 6,442.86/x
  3. Step 3: Cross multiply
    10,919.10x = 15,068.36 × 6,442.86
  4. Step 4: Simplify right side
    10,919.10x = 97,083,333.91
  5. Step 5: Solve for x
    x = 97,083,333.91/10,919.10
  6. Step 6: Final answer
    x = 8,891.15

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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.