Home / 10,280.44-15,414.18-8,720.99

Finding the Fourth Proportional to 10,280.44, 15,414.18 and 8,720.99

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Solution

The fourth proportional to 10,280.44, 15,414.18 and 8,720.99 is: 13,075.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,280.44 : 15,414.18 = 8,720.99 : x
  2. Step 2: Convert to fraction form
    10,280.44/15,414.18 = 8,720.99/x
  3. Step 3: Cross multiply
    10,280.44x = 15,414.18 × 8,720.99
  4. Step 4: Simplify right side
    10,280.44x = 134,426,909.64
  5. Step 5: Solve for x
    x = 134,426,909.64/10,280.44
  6. Step 6: Final answer
    x = 13,075.99

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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.