Home / 20,325.68-28,100.76-15,012.08

Finding the Fourth Proportional to 20,325.68, 28,100.76 and 15,012.08

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Solution

The fourth proportional to 20,325.68, 28,100.76 and 15,012.08 is: 20,754.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,325.68 : 28,100.76 = 15,012.08 : x
  2. Step 2: Convert to fraction form
    20,325.68/28,100.76 = 15,012.08/x
  3. Step 3: Cross multiply
    20,325.68x = 28,100.76 × 15,012.08
  4. Step 4: Simplify right side
    20,325.68x = 421,850,857.18
  5. Step 5: Solve for x
    x = 421,850,857.18/20,325.68
  6. Step 6: Final answer
    x = 20,754.58

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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.