Home / 39,931.97-59,847.06-21,220.97

Finding the Fourth Proportional to 39,931.97, 59,847.06 and 21,220.97

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Solution

The fourth proportional to 39,931.97, 59,847.06 and 21,220.97 is: 31,804.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,931.97 : 59,847.06 = 21,220.97 : x
  2. Step 2: Convert to fraction form
    39,931.97/59,847.06 = 21,220.97/x
  3. Step 3: Cross multiply
    39,931.97x = 59,847.06 × 21,220.97
  4. Step 4: Simplify right side
    39,931.97x = 1,270,012,365.61
  5. Step 5: Solve for x
    x = 1,270,012,365.61/39,931.97
  6. Step 6: Final answer
    x = 31,804.40

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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.