Home / 21,841.60-30,130.03-13,770.89

Finding the Fourth Proportional to 21,841.60, 30,130.03 and 13,770.89

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Solution

The fourth proportional to 21,841.60, 30,130.03 and 13,770.89 is: 18,996.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,841.60 : 30,130.03 = 13,770.89 : x
  2. Step 2: Convert to fraction form
    21,841.60/30,130.03 = 13,770.89/x
  3. Step 3: Cross multiply
    21,841.60x = 30,130.03 × 13,770.89
  4. Step 4: Simplify right side
    21,841.60x = 414,917,146.18
  5. Step 5: Solve for x
    x = 414,917,146.18/21,841.60
  6. Step 6: Final answer
    x = 18,996.65

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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.