Home / 13,348.06-18,422.58-7,971.28

Finding the Fourth Proportional to 13,348.06, 18,422.58 and 7,971.28

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Solution

The fourth proportional to 13,348.06, 18,422.58 and 7,971.28 is: 11,001.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,348.06 : 18,422.58 = 7,971.28 : x
  2. Step 2: Convert to fraction form
    13,348.06/18,422.58 = 7,971.28/x
  3. Step 3: Cross multiply
    13,348.06x = 18,422.58 × 7,971.28
  4. Step 4: Simplify right side
    13,348.06x = 146,851,543.50
  5. Step 5: Solve for x
    x = 146,851,543.50/13,348.06
  6. Step 6: Final answer
    x = 11,001.71

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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.