Home / 13,981.90-19,297.79-8,017.60

Finding the Fourth Proportional to 13,981.90, 19,297.79 and 8,017.60

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Solution

The fourth proportional to 13,981.90, 19,297.79 and 8,017.60 is: 11,065.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.90 : 19,297.79 = 8,017.60 : x
  2. Step 2: Convert to fraction form
    13,981.90/19,297.79 = 8,017.60/x
  3. Step 3: Cross multiply
    13,981.90x = 19,297.79 × 8,017.60
  4. Step 4: Simplify right side
    13,981.90x = 154,721,961.10
  5. Step 5: Solve for x
    x = 154,721,961.10/13,981.90
  6. Step 6: Final answer
    x = 11,065.88

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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.