Home / 15,290.82-21,081.60-10,255.86

Finding the Fourth Proportional to 15,290.82, 21,081.60 and 10,255.86

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Solution

The fourth proportional to 15,290.82, 21,081.60 and 10,255.86 is: 14,139.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,290.82 : 21,081.60 = 10,255.86 : x
  2. Step 2: Convert to fraction form
    15,290.82/21,081.60 = 10,255.86/x
  3. Step 3: Cross multiply
    15,290.82x = 21,081.60 × 10,255.86
  4. Step 4: Simplify right side
    15,290.82x = 216,209,938.18
  5. Step 5: Solve for x
    x = 216,209,938.18/15,290.82
  6. Step 6: Final answer
    x = 14,139.85

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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.