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Finding the Fourth Proportional to 15,220.92, 22,779.48 and 12,758.52

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Solution

The fourth proportional to 15,220.92, 22,779.48 and 12,758.52 is: 19,094.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.92 : 22,779.48 = 12,758.52 : x
  2. Step 2: Convert to fraction form
    15,220.92/22,779.48 = 12,758.52/x
  3. Step 3: Cross multiply
    15,220.92x = 22,779.48 × 12,758.52
  4. Step 4: Simplify right side
    15,220.92x = 290,632,451.17
  5. Step 5: Solve for x
    x = 290,632,451.17/15,220.92
  6. Step 6: Final answer
    x = 19,094.28

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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.