Home / 39,382.95-54,348.33-21,477.80

Finding the Fourth Proportional to 39,382.95, 54,348.33 and 21,477.80

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Solution

The fourth proportional to 39,382.95, 54,348.33 and 21,477.80 is: 29,639.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,382.95 : 54,348.33 = 21,477.80 : x
  2. Step 2: Convert to fraction form
    39,382.95/54,348.33 = 21,477.80/x
  3. Step 3: Cross multiply
    39,382.95x = 54,348.33 × 21,477.80
  4. Step 4: Simplify right side
    39,382.95x = 1,167,282,562.07
  5. Step 5: Solve for x
    x = 1,167,282,562.07/39,382.95
  6. Step 6: Final answer
    x = 29,639.29

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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.