Home / 13,990.68-19,304.88-8,021.25

Finding the Fourth Proportional to 13,990.68, 19,304.88 and 8,021.25

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Solution

The fourth proportional to 13,990.68, 19,304.88 and 8,021.25 is: 11,068.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.68 : 19,304.88 = 8,021.25 : x
  2. Step 2: Convert to fraction form
    13,990.68/19,304.88 = 8,021.25/x
  3. Step 3: Cross multiply
    13,990.68x = 19,304.88 × 8,021.25
  4. Step 4: Simplify right side
    13,990.68x = 154,849,268.70
  5. Step 5: Solve for x
    x = 154,849,268.70/13,990.68
  6. Step 6: Final answer
    x = 11,068.03

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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.