Home / 14,321.80-19,770.28-13,425.12

Finding the Fourth Proportional to 14,321.80, 19,770.28 and 13,425.12

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Solution

The fourth proportional to 14,321.80, 19,770.28 and 13,425.12 is: 18,532.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,321.80 : 19,770.28 = 13,425.12 : x
  2. Step 2: Convert to fraction form
    14,321.80/19,770.28 = 13,425.12/x
  3. Step 3: Cross multiply
    14,321.80x = 19,770.28 × 13,425.12
  4. Step 4: Simplify right side
    14,321.80x = 265,418,381.43
  5. Step 5: Solve for x
    x = 265,418,381.43/14,321.80
  6. Step 6: Final answer
    x = 18,532.47

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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.