Home / 39,434.55-54,420.80-21,530.69

Finding the Fourth Proportional to 39,434.55, 54,420.80 and 21,530.69

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Solution

The fourth proportional to 39,434.55, 54,420.80 and 21,530.69 is: 29,712.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,434.55 : 54,420.80 = 21,530.69 : x
  2. Step 2: Convert to fraction form
    39,434.55/54,420.80 = 21,530.69/x
  3. Step 3: Cross multiply
    39,434.55x = 54,420.80 × 21,530.69
  4. Step 4: Simplify right side
    39,434.55x = 1,171,717,374.35
  5. Step 5: Solve for x
    x = 1,171,717,374.35/39,434.55
  6. Step 6: Final answer
    x = 29,712.96

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Half 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.