Home / 39,860.98-55,008.15-21,955.99

Finding the Fourth Proportional to 39,860.98, 55,008.15 and 21,955.99

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Solution

The fourth proportional to 39,860.98, 55,008.15 and 21,955.99 is: 30,299.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,860.98 : 55,008.15 = 21,955.99 : x
  2. Step 2: Convert to fraction form
    39,860.98/55,008.15 = 21,955.99/x
  3. Step 3: Cross multiply
    39,860.98x = 55,008.15 × 21,955.99
  4. Step 4: Simplify right side
    39,860.98x = 1,207,758,398.11
  5. Step 5: Solve for x
    x = 1,207,758,398.11/39,860.98
  6. Step 6: Final answer
    x = 30,299.26

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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.