Home / 39,491.55-54,497.61-21,585.69

Finding the Fourth Proportional to 39,491.55, 54,497.61 and 21,585.69

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Solution

The fourth proportional to 39,491.55, 54,497.61 and 21,585.69 is: 29,787.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,491.55 : 54,497.61 = 21,585.69 : x
  2. Step 2: Convert to fraction form
    39,491.55/54,497.61 = 21,585.69/x
  3. Step 3: Cross multiply
    39,491.55x = 54,497.61 × 21,585.69
  4. Step 4: Simplify right side
    39,491.55x = 1,176,368,515.20
  5. Step 5: Solve for x
    x = 1,176,368,515.20/39,491.55
  6. Step 6: Final answer
    x = 29,787.85

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Half scale
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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.