Home / 47,969.40-71,947.62-12,911.16

Finding the Fourth Proportional to 47,969.40, 71,947.62 and 12,911.16

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Solution

The fourth proportional to 47,969.40, 71,947.62 and 12,911.16 is: 19,365.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,969.40 : 71,947.62 = 12,911.16 : x
  2. Step 2: Convert to fraction form
    47,969.40/71,947.62 = 12,911.16/x
  3. Step 3: Cross multiply
    47,969.40x = 71,947.62 × 12,911.16
  4. Step 4: Simplify right side
    47,969.40x = 928,927,233.44
  5. Step 5: Solve for x
    x = 928,927,233.44/47,969.40
  6. Step 6: Final answer
    x = 19,365.00

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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.