Home / 21,301.32-31,950.84-8,152.68

Finding the Fourth Proportional to 21,301.32, 31,950.84 and 8,152.68

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Solution

The fourth proportional to 21,301.32, 31,950.84 and 8,152.68 is: 12,228.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,301.32 : 31,950.84 = 8,152.68 : x
  2. Step 2: Convert to fraction form
    21,301.32/31,950.84 = 8,152.68/x
  3. Step 3: Cross multiply
    21,301.32x = 31,950.84 × 8,152.68
  4. Step 4: Simplify right side
    21,301.32x = 260,484,974.25
  5. Step 5: Solve for x
    x = 260,484,974.25/21,301.32
  6. Step 6: Final answer
    x = 12,228.58

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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.