Home / 13,981.12-20,971.69-9,585.25

Finding the Fourth Proportional to 13,981.12, 20,971.69 and 9,585.25

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Solution

The fourth proportional to 13,981.12, 20,971.69 and 9,585.25 is: 14,377.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.12 : 20,971.69 = 9,585.25 : x
  2. Step 2: Convert to fraction form
    13,981.12/20,971.69 = 9,585.25/x
  3. Step 3: Cross multiply
    13,981.12x = 20,971.69 × 9,585.25
  4. Step 4: Simplify right side
    13,981.12x = 201,018,815.18
  5. Step 5: Solve for x
    x = 201,018,815.18/13,981.12
  6. Step 6: Final answer
    x = 14,377.88

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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.