Home / 20,867.02-28,797.22-11,435.58

Finding the Fourth Proportional to 20,867.02, 28,797.22 and 11,435.58

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Solution

The fourth proportional to 20,867.02, 28,797.22 and 11,435.58 is: 15,781.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.02 : 28,797.22 = 11,435.58 : x
  2. Step 2: Convert to fraction form
    20,867.02/28,797.22 = 11,435.58/x
  3. Step 3: Cross multiply
    20,867.02x = 28,797.22 × 11,435.58
  4. Step 4: Simplify right side
    20,867.02x = 329,312,927.38
  5. Step 5: Solve for x
    x = 329,312,927.38/20,867.02
  6. Step 6: Final answer
    x = 15,781.50

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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.