Home / 15,112.48-20,848.50-10,071.78

Finding the Fourth Proportional to 15,112.48, 20,848.50 and 10,071.78

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Solution

The fourth proportional to 15,112.48, 20,848.50 and 10,071.78 is: 13,894.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,112.48 : 20,848.50 = 10,071.78 : x
  2. Step 2: Convert to fraction form
    15,112.48/20,848.50 = 10,071.78/x
  3. Step 3: Cross multiply
    15,112.48x = 20,848.50 × 10,071.78
  4. Step 4: Simplify right side
    15,112.48x = 209,981,505.33
  5. Step 5: Solve for x
    x = 209,981,505.33/15,112.48
  6. Step 6: Final answer
    x = 13,894.58

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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.