Home / 28,777.28-39,718.76-19,340.37

Finding the Fourth Proportional to 28,777.28, 39,718.76 and 19,340.37

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Solution

The fourth proportional to 28,777.28, 39,718.76 and 19,340.37 is: 26,693.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,777.28 : 39,718.76 = 19,340.37 : x
  2. Step 2: Convert to fraction form
    28,777.28/39,718.76 = 19,340.37/x
  3. Step 3: Cross multiply
    28,777.28x = 39,718.76 × 19,340.37
  4. Step 4: Simplify right side
    28,777.28x = 768,175,514.34
  5. Step 5: Solve for x
    x = 768,175,514.34/28,777.28
  6. Step 6: Final answer
    x = 26,693.82

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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.