Home / 20,548.08-28,356.30-11,116.80

Finding the Fourth Proportional to 20,548.08, 28,356.30 and 11,116.80

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Solution

The fourth proportional to 20,548.08, 28,356.30 and 11,116.80 is: 15,341.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,548.08 : 28,356.30 = 11,116.80 : x
  2. Step 2: Convert to fraction form
    20,548.08/28,356.30 = 11,116.80/x
  3. Step 3: Cross multiply
    20,548.08x = 28,356.30 × 11,116.80
  4. Step 4: Simplify right side
    20,548.08x = 315,231,315.84
  5. Step 5: Solve for x
    x = 315,231,315.84/20,548.08
  6. Step 6: Final answer
    x = 15,341.16

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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.