Home / 39,836.70-54,974.16-21,931.32

Finding the Fourth Proportional to 39,836.70, 54,974.16 and 21,931.32

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Solution

The fourth proportional to 39,836.70, 54,974.16 and 21,931.32 is: 30,264.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,836.70 : 54,974.16 = 21,931.32 : x
  2. Step 2: Convert to fraction form
    39,836.70/54,974.16 = 21,931.32/x
  3. Step 3: Cross multiply
    39,836.70x = 54,974.16 × 21,931.32
  4. Step 4: Simplify right side
    39,836.70x = 1,205,655,894.69
  5. Step 5: Solve for x
    x = 1,205,655,894.69/39,836.70
  6. Step 6: Final answer
    x = 30,264.95

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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.