Home / 39,415.35-54,393.33-21,510.75

Finding the Fourth Proportional to 39,415.35, 54,393.33 and 21,510.75

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Solution

The fourth proportional to 39,415.35, 54,393.33 and 21,510.75 is: 29,684.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,415.35 : 54,393.33 = 21,510.75 : x
  2. Step 2: Convert to fraction form
    39,415.35/54,393.33 = 21,510.75/x
  3. Step 3: Cross multiply
    39,415.35x = 54,393.33 × 21,510.75
  4. Step 4: Simplify right side
    39,415.35x = 1,170,041,323.30
  5. Step 5: Solve for x
    x = 1,170,041,323.30/39,415.35
  6. Step 6: Final answer
    x = 29,684.92

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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.