Home / 20,776.40-31,166.22-10,252.07

Finding the Fourth Proportional to 20,776.40, 31,166.22 and 10,252.07

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Solution

The fourth proportional to 20,776.40, 31,166.22 and 10,252.07 is: 15,378.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776.40 : 31,166.22 = 10,252.07 : x
  2. Step 2: Convert to fraction form
    20,776.40/31,166.22 = 10,252.07/x
  3. Step 3: Cross multiply
    20,776.40x = 31,166.22 × 10,252.07
  4. Step 4: Simplify right side
    20,776.40x = 319,518,269.08
  5. Step 5: Solve for x
    x = 319,518,269.08/20,776.40
  6. Step 6: Final answer
    x = 15,378.90

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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.