Home / 20,847.05-31,275.55-6,807.10

Finding the Fourth Proportional to 20,847.05, 31,275.55 and 6,807.10

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Solution

The fourth proportional to 20,847.05, 31,275.55 and 6,807.10 is: 10,212.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.05 : 31,275.55 = 6,807.10 : x
  2. Step 2: Convert to fraction form
    20,847.05/31,275.55 = 6,807.10/x
  3. Step 3: Cross multiply
    20,847.05x = 31,275.55 × 6,807.10
  4. Step 4: Simplify right side
    20,847.05x = 212,895,684.18
  5. Step 5: Solve for x
    x = 212,895,684.18/20,847.05
  6. Step 6: Final answer
    x = 10,212.27

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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.