Home / 39,816.10-54,948.67-21,915.06

Finding the Fourth Proportional to 39,816.10, 54,948.67 and 21,915.06

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Solution

The fourth proportional to 39,816.10, 54,948.67 and 21,915.06 is: 30,244.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,816.10 : 54,948.67 = 21,915.06 : x
  2. Step 2: Convert to fraction form
    39,816.10/54,948.67 = 21,915.06/x
  3. Step 3: Cross multiply
    39,816.10x = 54,948.67 × 21,915.06
  4. Step 4: Simplify right side
    39,816.10x = 1,204,203,139.13
  5. Step 5: Solve for x
    x = 1,204,203,139.13/39,816.10
  6. Step 6: Final answer
    x = 30,244.12

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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.