Home / 20,933.98-28,888.76-11,373.79

Finding the Fourth Proportional to 20,933.98, 28,888.76 and 11,373.79

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Solution

The fourth proportional to 20,933.98, 28,888.76 and 11,373.79 is: 15,695.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.98 : 28,888.76 = 11,373.79 : x
  2. Step 2: Convert to fraction form
    20,933.98/28,888.76 = 11,373.79/x
  3. Step 3: Cross multiply
    20,933.98x = 28,888.76 × 11,373.79
  4. Step 4: Simplify right side
    20,933.98x = 328,574,488.29
  5. Step 5: Solve for x
    x = 328,574,488.29/20,933.98
  6. Step 6: Final answer
    x = 15,695.75

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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.