Home / 15,435.44-21,301.33-8,720.92

Finding the Fourth Proportional to 15,435.44, 21,301.33 and 8,720.92

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Solution

The fourth proportional to 15,435.44, 21,301.33 and 8,720.92 is: 12,035.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,435.44 : 21,301.33 = 8,720.92 : x
  2. Step 2: Convert to fraction form
    15,435.44/21,301.33 = 8,720.92/x
  3. Step 3: Cross multiply
    15,435.44x = 21,301.33 × 8,720.92
  4. Step 4: Simplify right side
    15,435.44x = 185,767,194.82
  5. Step 5: Solve for x
    x = 185,767,194.82/15,435.44
  6. Step 6: Final answer
    x = 12,035.11

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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.