Home / 13,224.06-18,248.61-7,921.80

Finding the Fourth Proportional to 13,224.06, 18,248.61 and 7,921.80

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Solution

The fourth proportional to 13,224.06, 18,248.61 and 7,921.80 is: 10,931.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,224.06 : 18,248.61 = 7,921.80 : x
  2. Step 2: Convert to fraction form
    13,224.06/18,248.61 = 7,921.80/x
  3. Step 3: Cross multiply
    13,224.06x = 18,248.61 × 7,921.80
  4. Step 4: Simplify right side
    13,224.06x = 144,561,838.70
  5. Step 5: Solve for x
    x = 144,561,838.70/13,224.06
  6. Step 6: Final answer
    x = 10,931.73

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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.