Home / 20,492.06-28,278.27-11,417.21

Finding the Fourth Proportional to 20,492.06, 28,278.27 and 11,417.21

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Solution

The fourth proportional to 20,492.06, 28,278.27 and 11,417.21 is: 15,755.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,492.06 : 28,278.27 = 11,417.21 : x
  2. Step 2: Convert to fraction form
    20,492.06/28,278.27 = 11,417.21/x
  3. Step 3: Cross multiply
    20,492.06x = 28,278.27 × 11,417.21
  4. Step 4: Simplify right side
    20,492.06x = 322,858,805.64
  5. Step 5: Solve for x
    x = 322,858,805.64/20,492.06
  6. Step 6: Final answer
    x = 15,755.32

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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.