Home / 21,869.74-30,152.66-14,304.09

Finding the Fourth Proportional to 21,869.74, 30,152.66 and 14,304.09

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Solution

The fourth proportional to 21,869.74, 30,152.66 and 14,304.09 is: 19,721.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,869.74 : 30,152.66 = 14,304.09 : x
  2. Step 2: Convert to fraction form
    21,869.74/30,152.66 = 14,304.09/x
  3. Step 3: Cross multiply
    21,869.74x = 30,152.66 × 14,304.09
  4. Step 4: Simplify right side
    21,869.74x = 431,306,213.12
  5. Step 5: Solve for x
    x = 431,306,213.12/21,869.74
  6. Step 6: Final answer
    x = 19,721.60

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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.