Home / 10,137.47-15,205.75-3,117.20

Finding the Fourth Proportional to 10,137.47, 15,205.75 and 3,117.20

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Solution

The fourth proportional to 10,137.47, 15,205.75 and 3,117.20 is: 4,675.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,137.47 : 15,205.75 = 3,117.20 : x
  2. Step 2: Convert to fraction form
    10,137.47/15,205.75 = 3,117.20/x
  3. Step 3: Cross multiply
    10,137.47x = 15,205.75 × 3,117.20
  4. Step 4: Simplify right side
    10,137.47x = 47,399,363.90
  5. Step 5: Solve for x
    x = 47,399,363.90/10,137.47
  6. Step 6: Final answer
    x = 4,675.66

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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.