Home / 13,945.52-19,243.20-7,977.92

Finding the Fourth Proportional to 13,945.52, 19,243.20 and 7,977.92

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Solution

The fourth proportional to 13,945.52, 19,243.20 and 7,977.92 is: 11,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,945.52 : 19,243.20 = 7,977.92 : x
  2. Step 2: Convert to fraction form
    13,945.52/19,243.20 = 7,977.92/x
  3. Step 3: Cross multiply
    13,945.52x = 19,243.20 × 7,977.92
  4. Step 4: Simplify right side
    13,945.52x = 153,520,710.14
  5. Step 5: Solve for x
    x = 153,520,710.14/13,945.52
  6. Step 6: Final answer
    x = 11,008.60

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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.