Home / 20,752.64-28,642.32-12,254.22

Finding the Fourth Proportional to 20,752.64, 28,642.32 and 12,254.22

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Solution

The fourth proportional to 20,752.64, 28,642.32 and 12,254.22 is: 16,912.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.64 : 28,642.32 = 12,254.22 : x
  2. Step 2: Convert to fraction form
    20,752.64/28,642.32 = 12,254.22/x
  3. Step 3: Cross multiply
    20,752.64x = 28,642.32 × 12,254.22
  4. Step 4: Simplify right side
    20,752.64x = 350,989,290.59
  5. Step 5: Solve for x
    x = 350,989,290.59/20,752.64
  6. Step 6: Final answer
    x = 16,912.99

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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.