Home / 39,298.31-54,231.63-21,393.42

Finding the Fourth Proportional to 39,298.31, 54,231.63 and 21,393.42

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Solution

The fourth proportional to 39,298.31, 54,231.63 and 21,393.42 is: 29,522.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,298.31 : 54,231.63 = 21,393.42 : x
  2. Step 2: Convert to fraction form
    39,298.31/54,231.63 = 21,393.42/x
  3. Step 3: Cross multiply
    39,298.31x = 54,231.63 × 21,393.42
  4. Step 4: Simplify right side
    39,298.31x = 1,160,199,754.28
  5. Step 5: Solve for x
    x = 1,160,199,754.28/39,298.31
  6. Step 6: Final answer
    x = 29,522.89

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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.