Home / 13,582.97-18,744.56-7,921.64

Finding the Fourth Proportional to 13,582.97, 18,744.56 and 7,921.64

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Solution

The fourth proportional to 13,582.97, 18,744.56 and 7,921.64 is: 10,931.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,582.97 : 18,744.56 = 7,921.64 : x
  2. Step 2: Convert to fraction form
    13,582.97/18,744.56 = 7,921.64/x
  3. Step 3: Cross multiply
    13,582.97x = 18,744.56 × 7,921.64
  4. Step 4: Simplify right side
    13,582.97x = 148,487,737.80
  5. Step 5: Solve for x
    x = 148,487,737.80/13,582.97
  6. Step 6: Final answer
    x = 10,931.91

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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.