Home / 13,799.72-19,043.28-7,512.20

Finding the Fourth Proportional to 13,799.72, 19,043.28 and 7,512.20

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Solution

The fourth proportional to 13,799.72, 19,043.28 and 7,512.20 is: 10,366.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,799.72 : 19,043.28 = 7,512.20 : x
  2. Step 2: Convert to fraction form
    13,799.72/19,043.28 = 7,512.20/x
  3. Step 3: Cross multiply
    13,799.72x = 19,043.28 × 7,512.20
  4. Step 4: Simplify right side
    13,799.72x = 143,056,928.02
  5. Step 5: Solve for x
    x = 143,056,928.02/13,799.72
  6. Step 6: Final answer
    x = 10,366.65

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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.