Home / 20,807.66-31,211.04-5,225.24

Finding the Fourth Proportional to 20,807.66, 31,211.04 and 5,225.24

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Solution

The fourth proportional to 20,807.66, 31,211.04 and 5,225.24 is: 7,837.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.66 : 31,211.04 = 5,225.24 : x
  2. Step 2: Convert to fraction form
    20,807.66/31,211.04 = 5,225.24/x
  3. Step 3: Cross multiply
    20,807.66x = 31,211.04 × 5,225.24
  4. Step 4: Simplify right side
    20,807.66x = 163,085,174.65
  5. Step 5: Solve for x
    x = 163,085,174.65/20,807.66
  6. Step 6: Final answer
    x = 7,837.75

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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.