Home / 15,195.78-22,779.81-5,329.68

Finding the Fourth Proportional to 15,195.78, 22,779.81 and 5,329.68

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Solution

The fourth proportional to 15,195.78, 22,779.81 and 5,329.68 is: 7,989.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,195.78 : 22,779.81 = 5,329.68 : x
  2. Step 2: Convert to fraction form
    15,195.78/22,779.81 = 5,329.68/x
  3. Step 3: Cross multiply
    15,195.78x = 22,779.81 × 5,329.68
  4. Step 4: Simplify right side
    15,195.78x = 121,409,097.76
  5. Step 5: Solve for x
    x = 121,409,097.76/15,195.78
  6. Step 6: Final answer
    x = 7,989.66

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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.