Home / 13,981.14-20,967.66-4,118.58

Finding the Fourth Proportional to 13,981.14, 20,967.66 and 4,118.58

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Solution

The fourth proportional to 13,981.14, 20,967.66 and 4,118.58 is: 6,176.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.14 : 20,967.66 = 4,118.58 : x
  2. Step 2: Convert to fraction form
    13,981.14/20,967.66 = 4,118.58/x
  3. Step 3: Cross multiply
    13,981.14x = 20,967.66 × 4,118.58
  4. Step 4: Simplify right side
    13,981.14x = 86,356,985.12
  5. Step 5: Solve for x
    x = 86,356,985.12/13,981.14
  6. Step 6: Final answer
    x = 6,176.68

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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.