Home / 10,143.52-15,215.36-3,987.52

Finding the Fourth Proportional to 10,143.52, 15,215.36 and 3,987.52

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Solution

The fourth proportional to 10,143.52, 15,215.36 and 3,987.52 is: 5,981.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,143.52 : 15,215.36 = 3,987.52 : x
  2. Step 2: Convert to fraction form
    10,143.52/15,215.36 = 3,987.52/x
  3. Step 3: Cross multiply
    10,143.52x = 15,215.36 × 3,987.52
  4. Step 4: Simplify right side
    10,143.52x = 60,671,552.31
  5. Step 5: Solve for x
    x = 60,671,552.31/10,143.52
  6. Step 6: Final answer
    x = 5,981.31

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1.5x scale

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.