Home / 13,564.05-18,720.28-9,799.39

Finding the Fourth Proportional to 13,564.05, 18,720.28 and 9,799.39

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Solution

The fourth proportional to 13,564.05, 18,720.28 and 9,799.39 is: 13,524.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,564.05 : 18,720.28 = 9,799.39 : x
  2. Step 2: Convert to fraction form
    13,564.05/18,720.28 = 9,799.39/x
  3. Step 3: Cross multiply
    13,564.05x = 18,720.28 × 9,799.39
  4. Step 4: Simplify right side
    13,564.05x = 183,447,324.63
  5. Step 5: Solve for x
    x = 183,447,324.63/13,564.05
  6. Step 6: Final answer
    x = 13,524.52

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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.