Home / 14,121.61-21,158.11-9,954.16

Finding the Fourth Proportional to 14,121.61, 21,158.11 and 9,954.16

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Solution

The fourth proportional to 14,121.61, 21,158.11 and 9,954.16 is: 14,914.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,121.61 : 21,158.11 = 9,954.16 : x
  2. Step 2: Convert to fraction form
    14,121.61/21,158.11 = 9,954.16/x
  3. Step 3: Cross multiply
    14,121.61x = 21,158.11 × 9,954.16
  4. Step 4: Simplify right side
    14,121.61x = 210,611,171.79
  5. Step 5: Solve for x
    x = 210,611,171.79/14,121.61
  6. Step 6: Final answer
    x = 14,914.11

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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.