Home / 15,151.51-20,915.54-10,186.39

Finding the Fourth Proportional to 15,151.51, 20,915.54 and 10,186.39

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Solution

The fourth proportional to 15,151.51, 20,915.54 and 10,186.39 is: 14,061.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,151.51 : 20,915.54 = 10,186.39 : x
  2. Step 2: Convert to fraction form
    15,151.51/20,915.54 = 10,186.39/x
  3. Step 3: Cross multiply
    15,151.51x = 20,915.54 × 10,186.39
  4. Step 4: Simplify right side
    15,151.51x = 213,053,796.57
  5. Step 5: Solve for x
    x = 213,053,796.57/15,151.51
  6. Step 6: Final answer
    x = 14,061.56

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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.