Home / 13,731.68-20,579.28-7,156.10

Finding the Fourth Proportional to 13,731.68, 20,579.28 and 7,156.10

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Solution

The fourth proportional to 13,731.68, 20,579.28 and 7,156.10 is: 10,724.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.68 : 20,579.28 = 7,156.10 : x
  2. Step 2: Convert to fraction form
    13,731.68/20,579.28 = 7,156.10/x
  3. Step 3: Cross multiply
    13,731.68x = 20,579.28 × 7,156.10
  4. Step 4: Simplify right side
    13,731.68x = 147,267,282.71
  5. Step 5: Solve for x
    x = 147,267,282.71/13,731.68
  6. Step 6: Final answer
    x = 10,724.64

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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.