Home / 13,344.27-19,988.71-7,780.74

Finding the Fourth Proportional to 13,344.27, 19,988.71 and 7,780.74

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Solution

The fourth proportional to 13,344.27, 19,988.71 and 7,780.74 is: 11,654.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,344.27 : 19,988.71 = 7,780.74 : x
  2. Step 2: Convert to fraction form
    13,344.27/19,988.71 = 7,780.74/x
  3. Step 3: Cross multiply
    13,344.27x = 19,988.71 × 7,780.74
  4. Step 4: Simplify right side
    13,344.27x = 155,526,955.45
  5. Step 5: Solve for x
    x = 155,526,955.45/13,344.27
  6. Step 6: Final answer
    x = 11,654.96

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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.