Home / 39,715.84-54,805.08-21,810.52

Finding the Fourth Proportional to 39,715.84, 54,805.08 and 21,810.52

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Solution

The fourth proportional to 39,715.84, 54,805.08 and 21,810.52 is: 30,096.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,715.84 : 54,805.08 = 21,810.52 : x
  2. Step 2: Convert to fraction form
    39,715.84/54,805.08 = 21,810.52/x
  3. Step 3: Cross multiply
    39,715.84x = 54,805.08 × 21,810.52
  4. Step 4: Simplify right side
    39,715.84x = 1,195,327,293.44
  5. Step 5: Solve for x
    x = 1,195,327,293.44/39,715.84
  6. Step 6: Final answer
    x = 30,096.99

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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.