Home / 28,085.13-38,740.28-19,136.66

Finding the Fourth Proportional to 28,085.13, 38,740.28 and 19,136.66

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Solution

The fourth proportional to 28,085.13, 38,740.28 and 19,136.66 is: 26,396.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085.13 : 38,740.28 = 19,136.66 : x
  2. Step 2: Convert to fraction form
    28,085.13/38,740.28 = 19,136.66/x
  3. Step 3: Cross multiply
    28,085.13x = 38,740.28 × 19,136.66
  4. Step 4: Simplify right side
    28,085.13x = 741,359,277.28
  5. Step 5: Solve for x
    x = 741,359,277.28/28,085.13
  6. Step 6: Final answer
    x = 26,396.86

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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.