Home / 28,222.62-38,948.64-15,647.40

Finding the Fourth Proportional to 28,222.62, 38,948.64 and 15,647.40

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Solution

The fourth proportional to 28,222.62, 38,948.64 and 15,647.40 is: 21,594.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,222.62 : 38,948.64 = 15,647.40 : x
  2. Step 2: Convert to fraction form
    28,222.62/38,948.64 = 15,647.40/x
  3. Step 3: Cross multiply
    28,222.62x = 38,948.64 × 15,647.40
  4. Step 4: Simplify right side
    28,222.62x = 609,444,949.54
  5. Step 5: Solve for x
    x = 609,444,949.54/28,222.62
  6. Step 6: Final answer
    x = 21,594.20

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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.