Home / 15,277.85-21,084.26-8,565.64

Finding the Fourth Proportional to 15,277.85, 21,084.26 and 8,565.64

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Solution

The fourth proportional to 15,277.85, 21,084.26 and 8,565.64 is: 11,821.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,277.85 : 21,084.26 = 8,565.64 : x
  2. Step 2: Convert to fraction form
    15,277.85/21,084.26 = 8,565.64/x
  3. Step 3: Cross multiply
    15,277.85x = 21,084.26 × 8,565.64
  4. Step 4: Simplify right side
    15,277.85x = 180,600,180.83
  5. Step 5: Solve for x
    x = 180,600,180.83/15,277.85
  6. Step 6: Final answer
    x = 11,821.05

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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.