Home / 20,356.31-30,521.37-8,506.91

Finding the Fourth Proportional to 20,356.31, 30,521.37 and 8,506.91

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Solution

The fourth proportional to 20,356.31, 30,521.37 and 8,506.91 is: 12,754.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356.31 : 30,521.37 = 8,506.91 : x
  2. Step 2: Convert to fraction form
    20,356.31/30,521.37 = 8,506.91/x
  3. Step 3: Cross multiply
    20,356.31x = 30,521.37 × 8,506.91
  4. Step 4: Simplify right side
    20,356.31x = 259,642,484.19
  5. Step 5: Solve for x
    x = 259,642,484.19/20,356.31
  6. Step 6: Final answer
    x = 12,754.89

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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.