Home / 10,084.70-15,114.90-5,151.80

Finding the Fourth Proportional to 10,084.70, 15,114.90 and 5,151.80

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Solution

The fourth proportional to 10,084.70, 15,114.90 and 5,151.80 is: 7,721.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,084.70 : 15,114.90 = 5,151.80 : x
  2. Step 2: Convert to fraction form
    10,084.70/15,114.90 = 5,151.80/x
  3. Step 3: Cross multiply
    10,084.70x = 15,114.90 × 5,151.80
  4. Step 4: Simplify right side
    10,084.70x = 77,868,941.82
  5. Step 5: Solve for x
    x = 77,868,941.82/10,084.70
  6. Step 6: Final answer
    x = 7,721.49

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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.