Home / 28,458.24-39,271.68-15,882.96

Finding the Fourth Proportional to 28,458.24, 39,271.68 and 15,882.96

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Solution

The fourth proportional to 28,458.24, 39,271.68 and 15,882.96 is: 21,918.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,458.24 : 39,271.68 = 15,882.96 : x
  2. Step 2: Convert to fraction form
    28,458.24/39,271.68 = 15,882.96/x
  3. Step 3: Cross multiply
    28,458.24x = 39,271.68 × 15,882.96
  4. Step 4: Simplify right side
    28,458.24x = 623,750,522.57
  5. Step 5: Solve for x
    x = 623,750,522.57/28,458.24
  6. Step 6: Final answer
    x = 21,918.10

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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.