Home / 15,419.95-21,279.43-8,346.22

Finding the Fourth Proportional to 15,419.95, 21,279.43 and 8,346.22

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Solution

The fourth proportional to 15,419.95, 21,279.43 and 8,346.22 is: 11,517.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,419.95 : 21,279.43 = 8,346.22 : x
  2. Step 2: Convert to fraction form
    15,419.95/21,279.43 = 8,346.22/x
  3. Step 3: Cross multiply
    15,419.95x = 21,279.43 × 8,346.22
  4. Step 4: Simplify right side
    15,419.95x = 177,602,804.25
  5. Step 5: Solve for x
    x = 177,602,804.25/15,419.95
  6. Step 6: Final answer
    x = 11,517.73

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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.