Home / 20,924.73-28,871.55-12,429.65

Finding the Fourth Proportional to 20,924.73, 28,871.55 and 12,429.65

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Solution

The fourth proportional to 20,924.73, 28,871.55 and 12,429.65 is: 17,150.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.73 : 28,871.55 = 12,429.65 : x
  2. Step 2: Convert to fraction form
    20,924.73/28,871.55 = 12,429.65/x
  3. Step 3: Cross multiply
    20,924.73x = 28,871.55 × 12,429.65
  4. Step 4: Simplify right side
    20,924.73x = 358,863,117.10
  5. Step 5: Solve for x
    x = 358,863,117.10/20,924.73
  6. Step 6: Final answer
    x = 17,150.19

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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.