Home / 39,681.34-54,761.15-21,777.48

Finding the Fourth Proportional to 39,681.34, 54,761.15 and 21,777.48

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Solution

The fourth proportional to 39,681.34, 54,761.15 and 21,777.48 is: 30,053.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,681.34 : 54,761.15 = 21,777.48 : x
  2. Step 2: Convert to fraction form
    39,681.34/54,761.15 = 21,777.48/x
  3. Step 3: Cross multiply
    39,681.34x = 54,761.15 × 21,777.48
  4. Step 4: Simplify right side
    39,681.34x = 1,192,559,848.90
  5. Step 5: Solve for x
    x = 1,192,559,848.90/39,681.34
  6. Step 6: Final answer
    x = 30,053.42

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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.