Home / 10,350.40-15,515.84-5,151.36

Finding the Fourth Proportional to 10,350.40, 15,515.84 and 5,151.36

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Solution

The fourth proportional to 10,350.40, 15,515.84 and 5,151.36 is: 7,722.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,350.40 : 15,515.84 = 5,151.36 : x
  2. Step 2: Convert to fraction form
    10,350.40/15,515.84 = 5,151.36/x
  3. Step 3: Cross multiply
    10,350.40x = 15,515.84 × 5,151.36
  4. Step 4: Simplify right side
    10,350.40x = 79,927,677.54
  5. Step 5: Solve for x
    x = 79,927,677.54/10,350.40
  6. Step 6: Final answer
    x = 7,722.18

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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.