Home / 28,235.07-42,356.28-8,515.62

Finding the Fourth Proportional to 28,235.07, 42,356.28 and 8,515.62

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Solution

The fourth proportional to 28,235.07, 42,356.28 and 8,515.62 is: 12,774.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,235.07 : 42,356.28 = 8,515.62 : x
  2. Step 2: Convert to fraction form
    28,235.07/42,356.28 = 8,515.62/x
  3. Step 3: Cross multiply
    28,235.07x = 42,356.28 × 8,515.62
  4. Step 4: Simplify right side
    28,235.07x = 360,690,017.03
  5. Step 5: Solve for x
    x = 360,690,017.03/28,235.07
  6. Step 6: Final answer
    x = 12,774.54

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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.