Home / 15,808.29-21,815.39-8,734.66

Finding the Fourth Proportional to 15,808.29, 21,815.39 and 8,734.66

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Solution

The fourth proportional to 15,808.29, 21,815.39 and 8,734.66 is: 12,053.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,808.29 : 21,815.39 = 8,734.66 : x
  2. Step 2: Convert to fraction form
    15,808.29/21,815.39 = 8,734.66/x
  3. Step 3: Cross multiply
    15,808.29x = 21,815.39 × 8,734.66
  4. Step 4: Simplify right side
    15,808.29x = 190,550,014.42
  5. Step 5: Solve for x
    x = 190,550,014.42/15,808.29
  6. Step 6: Final answer
    x = 12,053.80

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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.