Home / 14,195.13-21,270.78-8,990.07

Finding the Fourth Proportional to 14,195.13, 21,270.78 and 8,990.07

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Solution

The fourth proportional to 14,195.13, 21,270.78 and 8,990.07 is: 13,471.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,195.13 : 21,270.78 = 8,990.07 : x
  2. Step 2: Convert to fraction form
    14,195.13/21,270.78 = 8,990.07/x
  3. Step 3: Cross multiply
    14,195.13x = 21,270.78 × 8,990.07
  4. Step 4: Simplify right side
    14,195.13x = 191,225,801.15
  5. Step 5: Solve for x
    x = 191,225,801.15/14,195.13
  6. Step 6: Final answer
    x = 13,471.23

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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.