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Finding the Fourth Proportional to 15,615.69, 23,224.42 and 15,221.62

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Solution

The fourth proportional to 15,615.69, 23,224.42 and 15,221.62 is: 22,638.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.69 : 23,224.42 = 15,221.62 : x
  2. Step 2: Convert to fraction form
    15,615.69/23,224.42 = 15,221.62/x
  3. Step 3: Cross multiply
    15,615.69x = 23,224.42 × 15,221.62
  4. Step 4: Simplify right side
    15,615.69x = 353,513,344.02
  5. Step 5: Solve for x
    x = 353,513,344.02/15,615.69
  6. Step 6: Final answer
    x = 22,638.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.