Home / 20,375.65-28,127.61-12,833.07

Finding the Fourth Proportional to 20,375.65, 28,127.61 and 12,833.07

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Solution

The fourth proportional to 20,375.65, 28,127.61 and 12,833.07 is: 17,715.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.65 : 28,127.61 = 12,833.07 : x
  2. Step 2: Convert to fraction form
    20,375.65/28,127.61 = 12,833.07/x
  3. Step 3: Cross multiply
    20,375.65x = 28,127.61 × 12,833.07
  4. Step 4: Simplify right side
    20,375.65x = 360,963,588.06
  5. Step 5: Solve for x
    x = 360,963,588.06/20,375.65
  6. Step 6: Final answer
    x = 17,715.44

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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.