Home / 28,411.24-39,193.10-21,685.19

Finding the Fourth Proportional to 28,411.24, 39,193.10 and 21,685.19

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Solution

The fourth proportional to 28,411.24, 39,193.10 and 21,685.19 is: 29,914.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,411.24 : 39,193.10 = 21,685.19 : x
  2. Step 2: Convert to fraction form
    28,411.24/39,193.10 = 21,685.19/x
  3. Step 3: Cross multiply
    28,411.24x = 39,193.10 × 21,685.19
  4. Step 4: Simplify right side
    28,411.24x = 849,909,820.19
  5. Step 5: Solve for x
    x = 849,909,820.19/28,411.24
  6. Step 6: Final answer
    x = 29,914.56

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Double scale
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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.