Home / 13,932.47-19,220.76-7,961.96

Finding the Fourth Proportional to 13,932.47, 19,220.76 and 7,961.96

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Solution

The fourth proportional to 13,932.47, 19,220.76 and 7,961.96 is: 10,984.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,932.47 : 19,220.76 = 7,961.96 : x
  2. Step 2: Convert to fraction form
    13,932.47/19,220.76 = 7,961.96/x
  3. Step 3: Cross multiply
    13,932.47x = 19,220.76 × 7,961.96
  4. Step 4: Simplify right side
    13,932.47x = 153,034,970.34
  5. Step 5: Solve for x
    x = 153,034,970.34/13,932.47
  6. Step 6: Final answer
    x = 10,984.05

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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.