Home / 10,428.95-15,635.21-5,160.26

Finding the Fourth Proportional to 10,428.95, 15,635.21 and 5,160.26

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Solution

The fourth proportional to 10,428.95, 15,635.21 and 5,160.26 is: 7,736.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,428.95 : 15,635.21 = 5,160.26 : x
  2. Step 2: Convert to fraction form
    10,428.95/15,635.21 = 5,160.26/x
  3. Step 3: Cross multiply
    10,428.95x = 15,635.21 × 5,160.26
  4. Step 4: Simplify right side
    10,428.95x = 80,681,644.78
  5. Step 5: Solve for x
    x = 80,681,644.78/10,428.95
  6. Step 6: Final answer
    x = 7,736.32

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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.