Home / 15,291.60-21,112.56-11,748.48

Finding the Fourth Proportional to 15,291.60, 21,112.56 and 11,748.48

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Solution

The fourth proportional to 15,291.60, 21,112.56 and 11,748.48 is: 16,220.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,291.60 : 21,112.56 = 11,748.48 : x
  2. Step 2: Convert to fraction form
    15,291.60/21,112.56 = 11,748.48/x
  3. Step 3: Cross multiply
    15,291.60x = 21,112.56 × 11,748.48
  4. Step 4: Simplify right side
    15,291.60x = 248,040,488.91
  5. Step 5: Solve for x
    x = 248,040,488.91/15,291.60
  6. Step 6: Final answer
    x = 16,220.70

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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.