Home / 10,921.62-15,068.37-6,446.91

Finding the Fourth Proportional to 10,921.62, 15,068.37 and 6,446.91

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Solution

The fourth proportional to 10,921.62, 15,068.37 and 6,446.91 is: 8,894.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.62 : 15,068.37 = 6,446.91 : x
  2. Step 2: Convert to fraction form
    10,921.62/15,068.37 = 6,446.91/x
  3. Step 3: Cross multiply
    10,921.62x = 15,068.37 × 6,446.91
  4. Step 4: Simplify right side
    10,921.62x = 97,144,425.24
  5. Step 5: Solve for x
    x = 97,144,425.24/10,921.62
  6. Step 6: Final answer
    x = 8,894.69

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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.