Home / 38,684.17-53,386.41-21,687.58

Finding the Fourth Proportional to 38,684.17, 53,386.41 and 21,687.58

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Solution

The fourth proportional to 38,684.17, 53,386.41 and 21,687.58 is: 29,930.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,684.17 : 53,386.41 = 21,687.58 : x
  2. Step 2: Convert to fraction form
    38,684.17/53,386.41 = 21,687.58/x
  3. Step 3: Cross multiply
    38,684.17x = 53,386.41 × 21,687.58
  4. Step 4: Simplify right side
    38,684.17x = 1,157,822,037.79
  5. Step 5: Solve for x
    x = 1,157,822,037.79/38,684.17
  6. Step 6: Final answer
    x = 29,930.12

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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.