Home / 13,949.47-20,920.10-7,617.08

Finding the Fourth Proportional to 13,949.47, 20,920.10 and 7,617.08

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Solution

The fourth proportional to 13,949.47, 20,920.10 and 7,617.08 is: 11,423.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.47 : 20,920.10 = 7,617.08 : x
  2. Step 2: Convert to fraction form
    13,949.47/20,920.10 = 7,617.08/x
  3. Step 3: Cross multiply
    13,949.47x = 20,920.10 × 7,617.08
  4. Step 4: Simplify right side
    13,949.47x = 159,349,963.85
  5. Step 5: Solve for x
    x = 159,349,963.85/13,949.47
  6. Step 6: Final answer
    x = 11,423.37

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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.