Home / 39,837.35-54,975.06-21,931.99

Finding the Fourth Proportional to 39,837.35, 54,975.06 and 21,931.99

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Solution

The fourth proportional to 39,837.35, 54,975.06 and 21,931.99 is: 30,265.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,837.35 : 54,975.06 = 21,931.99 : x
  2. Step 2: Convert to fraction form
    39,837.35/54,975.06 = 21,931.99/x
  3. Step 3: Cross multiply
    39,837.35x = 54,975.06 × 21,931.99
  4. Step 4: Simplify right side
    39,837.35x = 1,205,712,328.73
  5. Step 5: Solve for x
    x = 1,205,712,328.73/39,837.35
  6. Step 6: Final answer
    x = 30,265.87

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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.