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Finding the Fourth Proportional to 39,216.40, 58,849.80 and 21,698.80

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Solution

The fourth proportional to 39,216.40, 58,849.80 and 21,698.80 is: 32,562.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,216.40 : 58,849.80 = 21,698.80 : x
  2. Step 2: Convert to fraction form
    39,216.40/58,849.80 = 21,698.80/x
  3. Step 3: Cross multiply
    39,216.40x = 58,849.80 × 21,698.80
  4. Step 4: Simplify right side
    39,216.40x = 1,276,970,040.24
  5. Step 5: Solve for x
    x = 1,276,970,040.24/39,216.40
  6. Step 6: Final answer
    x = 32,562.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.