Home / 39,837.06-54,974.70-21,931.70

Finding the Fourth Proportional to 39,837.06, 54,974.70 and 21,931.70

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Solution

The fourth proportional to 39,837.06, 54,974.70 and 21,931.70 is: 30,265.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,837.06 : 54,974.70 = 21,931.70 : x
  2. Step 2: Convert to fraction form
    39,837.06/54,974.70 = 21,931.70/x
  3. Step 3: Cross multiply
    39,837.06x = 54,974.70 × 21,931.70
  4. Step 4: Simplify right side
    39,837.06x = 1,205,688,353.12
  5. Step 5: Solve for x
    x = 1,205,688,353.12/39,837.06
  6. Step 6: Final answer
    x = 30,265.50

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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.