Home / 10,876.62-15,011.89-7,100.40

Finding the Fourth Proportional to 10,876.62, 15,011.89 and 7,100.40

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Solution

The fourth proportional to 10,876.62, 15,011.89 and 7,100.40 is: 9,799.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,876.62 : 15,011.89 = 7,100.40 : x
  2. Step 2: Convert to fraction form
    10,876.62/15,011.89 = 7,100.40/x
  3. Step 3: Cross multiply
    10,876.62x = 15,011.89 × 7,100.40
  4. Step 4: Simplify right side
    10,876.62x = 106,590,423.76
  5. Step 5: Solve for x
    x = 106,590,423.76/10,876.62
  6. Step 6: Final answer
    x = 9,799.96

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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.