Home / 15,534.51-21,436.89-8,819.25

Finding the Fourth Proportional to 15,534.51, 21,436.89 and 8,819.25

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Solution

The fourth proportional to 15,534.51, 21,436.89 and 8,819.25 is: 12,170.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,534.51 : 21,436.89 = 8,819.25 : x
  2. Step 2: Convert to fraction form
    15,534.51/21,436.89 = 8,819.25/x
  3. Step 3: Cross multiply
    15,534.51x = 21,436.89 × 8,819.25
  4. Step 4: Simplify right side
    15,534.51x = 189,057,292.13
  5. Step 5: Solve for x
    x = 189,057,292.13/15,534.51
  6. Step 6: Final answer
    x = 12,170.15

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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.