Home / 10,528.16-15,778.59-4,280.90

Finding the Fourth Proportional to 10,528.16, 15,778.59 and 4,280.90

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Solution

The fourth proportional to 10,528.16, 15,778.59 and 4,280.90 is: 6,415.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,528.16 : 15,778.59 = 4,280.90 : x
  2. Step 2: Convert to fraction form
    10,528.16/15,778.59 = 4,280.90/x
  3. Step 3: Cross multiply
    10,528.16x = 15,778.59 × 4,280.90
  4. Step 4: Simplify right side
    10,528.16x = 67,546,589.32
  5. Step 5: Solve for x
    x = 67,546,589.32/10,528.16
  6. Step 6: Final answer
    x = 6,415.80

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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.