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Finding the Fourth Proportional to 39,643.20, 59,400.48 and 20,922.24

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Solution

The fourth proportional to 39,643.20, 59,400.48 and 20,922.24 is: 31,349.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,643.20 : 59,400.48 = 20,922.24 : x
  2. Step 2: Convert to fraction form
    39,643.20/59,400.48 = 20,922.24/x
  3. Step 3: Cross multiply
    39,643.20x = 59,400.48 × 20,922.24
  4. Step 4: Simplify right side
    39,643.20x = 1,242,791,098.68
  5. Step 5: Solve for x
    x = 1,242,791,098.68/39,643.20
  6. Step 6: Final answer
    x = 31,349.41

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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.