Home / 13,721.80-20,570.68-6,602.48

Finding the Fourth Proportional to 13,721.80, 20,570.68 and 6,602.48

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Solution

The fourth proportional to 13,721.80, 20,570.68 and 6,602.48 is: 9,897.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.80 : 20,570.68 = 6,602.48 : x
  2. Step 2: Convert to fraction form
    13,721.80/20,570.68 = 6,602.48/x
  3. Step 3: Cross multiply
    13,721.80x = 20,570.68 × 6,602.48
  4. Step 4: Simplify right side
    13,721.80x = 135,817,503.29
  5. Step 5: Solve for x
    x = 135,817,503.29/13,721.80
  6. Step 6: Final answer
    x = 9,897.94

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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.