Home / 20,814.48-31,238.12-10,959.60

Finding the Fourth Proportional to 20,814.48, 31,238.12 and 10,959.60

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Solution

The fourth proportional to 20,814.48, 31,238.12 and 10,959.60 is: 16,448.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,814.48 : 31,238.12 = 10,959.60 : x
  2. Step 2: Convert to fraction form
    20,814.48/31,238.12 = 10,959.60/x
  3. Step 3: Cross multiply
    20,814.48x = 31,238.12 × 10,959.60
  4. Step 4: Simplify right side
    20,814.48x = 342,357,299.95
  5. Step 5: Solve for x
    x = 342,357,299.95/20,814.48
  6. Step 6: Final answer
    x = 16,448.04

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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.