Home / 13,077.07-18,046.73-7,972.88

Finding the Fourth Proportional to 13,077.07, 18,046.73 and 7,972.88

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Solution

The fourth proportional to 13,077.07, 18,046.73 and 7,972.88 is: 11,002.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,077.07 : 18,046.73 = 7,972.88 : x
  2. Step 2: Convert to fraction form
    13,077.07/18,046.73 = 7,972.88/x
  3. Step 3: Cross multiply
    13,077.07x = 18,046.73 × 7,972.88
  4. Step 4: Simplify right side
    13,077.07x = 143,884,348.29
  5. Step 5: Solve for x
    x = 143,884,348.29/13,077.07
  6. Step 6: Final answer
    x = 11,002.80

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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.