Home / 20,878.90-31,297.08-10,333.10

Finding the Fourth Proportional to 20,878.90, 31,297.08 and 10,333.10

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Solution

The fourth proportional to 20,878.90, 31,297.08 and 10,333.10 is: 15,489.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,878.90 : 31,297.08 = 10,333.10 : x
  2. Step 2: Convert to fraction form
    20,878.90/31,297.08 = 10,333.10/x
  3. Step 3: Cross multiply
    20,878.90x = 31,297.08 × 10,333.10
  4. Step 4: Simplify right side
    20,878.90x = 323,395,974.34
  5. Step 5: Solve for x
    x = 323,395,974.34/20,878.90
  6. Step 6: Final answer
    x = 15,489.13

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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.