Home / 28,562.68-42,851.58-11,917.18

Finding the Fourth Proportional to 28,562.68, 42,851.58 and 11,917.18

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Solution

The fourth proportional to 28,562.68, 42,851.58 and 11,917.18 is: 17,878.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,562.68 : 42,851.58 = 11,917.18 : x
  2. Step 2: Convert to fraction form
    28,562.68/42,851.58 = 11,917.18/x
  3. Step 3: Cross multiply
    28,562.68x = 42,851.58 × 11,917.18
  4. Step 4: Simplify right side
    28,562.68x = 510,669,992.14
  5. Step 5: Solve for x
    x = 510,669,992.14/28,562.68
  6. Step 6: Final answer
    x = 17,878.92

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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.