Home / 15,524.06-21,425.31-8,812.40

Finding the Fourth Proportional to 15,524.06, 21,425.31 and 8,812.40

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Solution

The fourth proportional to 15,524.06, 21,425.31 and 8,812.40 is: 12,162.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,524.06 : 21,425.31 = 8,812.40 : x
  2. Step 2: Convert to fraction form
    15,524.06/21,425.31 = 8,812.40/x
  3. Step 3: Cross multiply
    15,524.06x = 21,425.31 × 8,812.40
  4. Step 4: Simplify right side
    15,524.06x = 188,808,294.72
  5. Step 5: Solve for x
    x = 188,808,294.72/15,524.06
  6. Step 6: Final answer
    x = 12,162.31

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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.