Home / 20,878.50-31,317.72-6,087.10

Finding the Fourth Proportional to 20,878.50, 31,317.72 and 6,087.10

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Solution

The fourth proportional to 20,878.50, 31,317.72 and 6,087.10 is: 9,130.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,878.50 : 31,317.72 = 6,087.10 : x
  2. Step 2: Convert to fraction form
    20,878.50/31,317.72 = 6,087.10/x
  3. Step 3: Cross multiply
    20,878.50x = 31,317.72 × 6,087.10
  4. Step 4: Simplify right side
    20,878.50x = 190,634,093.41
  5. Step 5: Solve for x
    x = 190,634,093.41/20,878.50
  6. Step 6: Final answer
    x = 9,130.64

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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.