Home / 15,039.68-22,544.64-7,128.30

Finding the Fourth Proportional to 15,039.68, 22,544.64 and 7,128.30

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Solution

The fourth proportional to 15,039.68, 22,544.64 and 7,128.30 is: 10,685.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,039.68 : 22,544.64 = 7,128.30 : x
  2. Step 2: Convert to fraction form
    15,039.68/22,544.64 = 7,128.30/x
  3. Step 3: Cross multiply
    15,039.68x = 22,544.64 × 7,128.30
  4. Step 4: Simplify right side
    15,039.68x = 160,704,957.31
  5. Step 5: Solve for x
    x = 160,704,957.31/15,039.68
  6. Step 6: Final answer
    x = 10,685.40

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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.