Home / 20,329.98-28,055.43-11,376.90

Finding the Fourth Proportional to 20,329.98, 28,055.43 and 11,376.90

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Solution

The fourth proportional to 20,329.98, 28,055.43 and 11,376.90 is: 15,700.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,329.98 : 28,055.43 = 11,376.90 : x
  2. Step 2: Convert to fraction form
    20,329.98/28,055.43 = 11,376.90/x
  3. Step 3: Cross multiply
    20,329.98x = 28,055.43 × 11,376.90
  4. Step 4: Simplify right side
    20,329.98x = 319,183,821.57
  5. Step 5: Solve for x
    x = 319,183,821.57/20,329.98
  6. Step 6: Final answer
    x = 15,700.15

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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.