Home / 20,878.79-31,314.85-6,084.25

Finding the Fourth Proportional to 20,878.79, 31,314.85 and 6,084.25

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Solution

The fourth proportional to 20,878.79, 31,314.85 and 6,084.25 is: 9,125.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,878.79 : 31,314.85 = 6,084.25 : x
  2. Step 2: Convert to fraction form
    20,878.79/31,314.85 = 6,084.25/x
  3. Step 3: Cross multiply
    20,878.79x = 31,314.85 × 6,084.25
  4. Step 4: Simplify right side
    20,878.79x = 190,527,231.53
  5. Step 5: Solve for x
    x = 190,527,231.53/20,878.79
  6. Step 6: Final answer
    x = 9,125.40

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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.