Home / 21,996.74-30,314.80-15,623.62

Finding the Fourth Proportional to 21,996.74, 30,314.80 and 15,623.62

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Solution

The fourth proportional to 21,996.74, 30,314.80 and 15,623.62 is: 21,531.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,996.74 : 30,314.80 = 15,623.62 : x
  2. Step 2: Convert to fraction form
    21,996.74/30,314.80 = 15,623.62/x
  3. Step 3: Cross multiply
    21,996.74x = 30,314.80 × 15,623.62
  4. Step 4: Simplify right side
    21,996.74x = 473,626,915.58
  5. Step 5: Solve for x
    x = 473,626,915.58/21,996.74
  6. Step 6: Final answer
    x = 21,531.69

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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.