Home / 47,820.16-71,734.40-12,760

Finding the Fourth Proportional to 47,820.16, 71,734.40 and 12,760

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Solution

The fourth proportional to 47,820.16, 71,734.40 and 12,760 is: 19,141.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,820.16 : 71,734.40 = 12,760 : x
  2. Step 2: Convert to fraction form
    47,820.16/71,734.40 = 12,760/x
  3. Step 3: Cross multiply
    47,820.16x = 71,734.40 × 12,760
  4. Step 4: Simplify right side
    47,820.16x = 915,330,944.00
  5. Step 5: Solve for x
    x = 915,330,944.00/47,820.16
  6. Step 6: Final answer
    x = 19,141.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.