Home / 10,612.95-15,920.23-2,821.56

Finding the Fourth Proportional to 10,612.95, 15,920.23 and 2,821.56

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Solution

The fourth proportional to 10,612.95, 15,920.23 and 2,821.56 is: 4,232.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,612.95 : 15,920.23 = 2,821.56 : x
  2. Step 2: Convert to fraction form
    10,612.95/15,920.23 = 2,821.56/x
  3. Step 3: Cross multiply
    10,612.95x = 15,920.23 × 2,821.56
  4. Step 4: Simplify right side
    10,612.95x = 44,919,884.16
  5. Step 5: Solve for x
    x = 44,919,884.16/10,612.95
  6. Step 6: Final answer
    x = 4,232.55

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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.