Home / 20,797.65-31,223.30-17,855.01

Finding the Fourth Proportional to 20,797.65, 31,223.30 and 17,855.01

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Solution

The fourth proportional to 20,797.65, 31,223.30 and 17,855.01 is: 26,805.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,797.65 : 31,223.30 = 17,855.01 : x
  2. Step 2: Convert to fraction form
    20,797.65/31,223.30 = 17,855.01/x
  3. Step 3: Cross multiply
    20,797.65x = 31,223.30 × 17,855.01
  4. Step 4: Simplify right side
    20,797.65x = 557,492,244.46
  5. Step 5: Solve for x
    x = 557,492,244.46/20,797.65
  6. Step 6: Final answer
    x = 26,805.54

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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.