Home / 15,440.18-21,305.73-8,725.79

Finding the Fourth Proportional to 15,440.18, 21,305.73 and 8,725.79

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Solution

The fourth proportional to 15,440.18, 21,305.73 and 8,725.79 is: 12,040.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,440.18 : 21,305.73 = 8,725.79 : x
  2. Step 2: Convert to fraction form
    15,440.18/21,305.73 = 8,725.79/x
  3. Step 3: Cross multiply
    15,440.18x = 21,305.73 × 8,725.79
  4. Step 4: Simplify right side
    15,440.18x = 185,909,219.25
  5. Step 5: Solve for x
    x = 185,909,219.25/15,440.18
  6. Step 6: Final answer
    x = 12,040.62

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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.