Home / 15,077.44-20,812.32-12,278.08

Finding the Fourth Proportional to 15,077.44, 20,812.32 and 12,278.08

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Solution

The fourth proportional to 15,077.44, 20,812.32 and 12,278.08 is: 16,948.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,077.44 : 20,812.32 = 12,278.08 : x
  2. Step 2: Convert to fraction form
    15,077.44/20,812.32 = 12,278.08/x
  3. Step 3: Cross multiply
    15,077.44x = 20,812.32 × 12,278.08
  4. Step 4: Simplify right side
    15,077.44x = 255,535,329.95
  5. Step 5: Solve for x
    x = 255,535,329.95/15,077.44
  6. Step 6: Final answer
    x = 16,948.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.