Home / 21,148.62-29,151.08-14,340.42

Finding the Fourth Proportional to 21,148.62, 29,151.08 and 14,340.42

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Solution

The fourth proportional to 21,148.62, 29,151.08 and 14,340.42 is: 19,766.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,148.62 : 29,151.08 = 14,340.42 : x
  2. Step 2: Convert to fraction form
    21,148.62/29,151.08 = 14,340.42/x
  3. Step 3: Cross multiply
    21,148.62x = 29,151.08 × 14,340.42
  4. Step 4: Simplify right side
    21,148.62x = 418,038,730.65
  5. Step 5: Solve for x
    x = 418,038,730.65/21,148.62
  6. Step 6: Final answer
    x = 19,766.71

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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.