Home / 27,139.10-40,643.85-21,955.10

Finding the Fourth Proportional to 27,139.10, 40,643.85 and 21,955.10

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Solution

The fourth proportional to 27,139.10, 40,643.85 and 21,955.10 is: 32,880.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,139.10 : 40,643.85 = 21,955.10 : x
  2. Step 2: Convert to fraction form
    27,139.10/40,643.85 = 21,955.10/x
  3. Step 3: Cross multiply
    27,139.10x = 40,643.85 × 21,955.10
  4. Step 4: Simplify right side
    27,139.10x = 892,339,791.14
  5. Step 5: Solve for x
    x = 892,339,791.14/27,139.10
  6. Step 6: Final answer
    x = 32,880.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.