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Finding the Fourth Proportional to 15,362.51, 21,200.15 and 8,648.22

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Solution

The fourth proportional to 15,362.51, 21,200.15 and 8,648.22 is: 11,934.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,362.51 : 21,200.15 = 8,648.22 : x
  2. Step 2: Convert to fraction form
    15,362.51/21,200.15 = 8,648.22/x
  3. Step 3: Cross multiply
    15,362.51x = 21,200.15 × 8,648.22
  4. Step 4: Simplify right side
    15,362.51x = 183,343,517.99
  5. Step 5: Solve for x
    x = 183,343,517.99/15,362.51
  6. Step 6: Final answer
    x = 11,934.48

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Similar ratio
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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.