Home / 20,695.99-31,035.47-8,214.29

Finding the Fourth Proportional to 20,695.99, 31,035.47 and 8,214.29

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Solution

The fourth proportional to 20,695.99, 31,035.47 and 8,214.29 is: 12,318.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.99 : 31,035.47 = 8,214.29 : x
  2. Step 2: Convert to fraction form
    20,695.99/31,035.47 = 8,214.29/x
  3. Step 3: Cross multiply
    20,695.99x = 31,035.47 × 8,214.29
  4. Step 4: Simplify right side
    20,695.99x = 254,934,448.99
  5. Step 5: Solve for x
    x = 254,934,448.99/20,695.99
  6. Step 6: Final answer
    x = 12,318.06

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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.