Home / 20,393.87-30,554.60-8,521.51

Finding the Fourth Proportional to 20,393.87, 30,554.60 and 8,521.51

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Solution

The fourth proportional to 20,393.87, 30,554.60 and 8,521.51 is: 12,767.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,393.87 : 30,554.60 = 8,521.51 : x
  2. Step 2: Convert to fraction form
    20,393.87/30,554.60 = 8,521.51/x
  3. Step 3: Cross multiply
    20,393.87x = 30,554.60 × 8,521.51
  4. Step 4: Simplify right side
    20,393.87x = 260,371,134.07
  5. Step 5: Solve for x
    x = 260,371,134.07/20,393.87
  6. Step 6: Final answer
    x = 12,767.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.