Home / 23,228.21-34,666.78-20,986.20

Finding the Fourth Proportional to 23,228.21, 34,666.78 and 20,986.20

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Solution

The fourth proportional to 23,228.21, 34,666.78 and 20,986.20 is: 31,320.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,228.21 : 34,666.78 = 20,986.20 : x
  2. Step 2: Convert to fraction form
    23,228.21/34,666.78 = 20,986.20/x
  3. Step 3: Cross multiply
    23,228.21x = 34,666.78 × 20,986.20
  4. Step 4: Simplify right side
    23,228.21x = 727,523,805.10
  5. Step 5: Solve for x
    x = 727,523,805.10/23,228.21
  6. Step 6: Final answer
    x = 31,320.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.