Home / 39,778.94-54,894.95-21,875.17

Finding the Fourth Proportional to 39,778.94, 54,894.95 and 21,875.17

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Solution

The fourth proportional to 39,778.94, 54,894.95 and 21,875.17 is: 30,187.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,778.94 : 54,894.95 = 21,875.17 : x
  2. Step 2: Convert to fraction form
    39,778.94/54,894.95 = 21,875.17/x
  3. Step 3: Cross multiply
    39,778.94x = 54,894.95 × 21,875.17
  4. Step 4: Simplify right side
    39,778.94x = 1,200,836,363.39
  5. Step 5: Solve for x
    x = 1,200,836,363.39/39,778.94
  6. Step 6: Final answer
    x = 30,187.74

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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.