Home / 10,139.49-15,210.54-3,119.97

Finding the Fourth Proportional to 10,139.49, 15,210.54 and 3,119.97

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Solution

The fourth proportional to 10,139.49, 15,210.54 and 3,119.97 is: 4,680.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,139.49 : 15,210.54 = 3,119.97 : x
  2. Step 2: Convert to fraction form
    10,139.49/15,210.54 = 3,119.97/x
  3. Step 3: Cross multiply
    10,139.49x = 15,210.54 × 3,119.97
  4. Step 4: Simplify right side
    10,139.49x = 47,456,428.48
  5. Step 5: Solve for x
    x = 47,456,428.48/10,139.49
  6. Step 6: Final answer
    x = 4,680.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.