Home / 39,186.59-54,077.47-21,281.60

Finding the Fourth Proportional to 39,186.59, 54,077.47 and 21,281.60

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Solution

The fourth proportional to 39,186.59, 54,077.47 and 21,281.60 is: 29,368.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,186.59 : 54,077.47 = 21,281.60 : x
  2. Step 2: Convert to fraction form
    39,186.59/54,077.47 = 21,281.60/x
  3. Step 3: Cross multiply
    39,186.59x = 54,077.47 × 21,281.60
  4. Step 4: Simplify right side
    39,186.59x = 1,150,854,815.16
  5. Step 5: Solve for x
    x = 1,150,854,815.16/39,186.59
  6. Step 6: Final answer
    x = 29,368.59

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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.