Home / 28,869.13-39,817.33-19,931.59

Finding the Fourth Proportional to 28,869.13, 39,817.33 and 19,931.59

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Solution

The fourth proportional to 28,869.13, 39,817.33 and 19,931.59 is: 27,490.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,869.13 : 39,817.33 = 19,931.59 : x
  2. Step 2: Convert to fraction form
    28,869.13/39,817.33 = 19,931.59/x
  3. Step 3: Cross multiply
    28,869.13x = 39,817.33 × 19,931.59
  4. Step 4: Simplify right side
    28,869.13x = 793,622,696.45
  5. Step 5: Solve for x
    x = 793,622,696.45/28,869.13
  6. Step 6: Final answer
    x = 27,490.36

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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.