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Finding the Fourth Proportional to 15,171.54, 22,762.65 and 7,779.48

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Solution

The fourth proportional to 15,171.54, 22,762.65 and 7,779.48 is: 11,671.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,171.54 : 22,762.65 = 7,779.48 : x
  2. Step 2: Convert to fraction form
    15,171.54/22,762.65 = 7,779.48/x
  3. Step 3: Cross multiply
    15,171.54x = 22,762.65 × 7,779.48
  4. Step 4: Simplify right side
    15,171.54x = 177,081,580.42
  5. Step 5: Solve for x
    x = 177,081,580.42/15,171.54
  6. Step 6: Final answer
    x = 11,671.96

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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.