Home / 20,439.08-28,205.02-11,941.99

Finding the Fourth Proportional to 20,439.08, 28,205.02 and 11,941.99

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Solution

The fourth proportional to 20,439.08, 28,205.02 and 11,941.99 is: 16,479.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.08 : 28,205.02 = 11,941.99 : x
  2. Step 2: Convert to fraction form
    20,439.08/28,205.02 = 11,941.99/x
  3. Step 3: Cross multiply
    20,439.08x = 28,205.02 × 11,941.99
  4. Step 4: Simplify right side
    20,439.08x = 336,824,011.20
  5. Step 5: Solve for x
    x = 336,824,011.20/20,439.08
  6. Step 6: Final answer
    x = 16,479.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.