Home / 20,933.57-28,888.12-11,501.93

Finding the Fourth Proportional to 20,933.57, 28,888.12 and 11,501.93

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Solution

The fourth proportional to 20,933.57, 28,888.12 and 11,501.93 is: 15,872.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.57 : 28,888.12 = 11,501.93 : x
  2. Step 2: Convert to fraction form
    20,933.57/28,888.12 = 11,501.93/x
  3. Step 3: Cross multiply
    20,933.57x = 28,888.12 × 11,501.93
  4. Step 4: Simplify right side
    20,933.57x = 332,269,220.67
  5. Step 5: Solve for x
    x = 332,269,220.67/20,933.57
  6. Step 6: Final answer
    x = 15,872.55

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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.