Home / 18,519.47-27,746.80-15,419.39

Finding the Fourth Proportional to 18,519.47, 27,746.80 and 15,419.39

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Solution

The fourth proportional to 18,519.47, 27,746.80 and 15,419.39 is: 23,102.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.47 : 27,746.80 = 15,419.39 : x
  2. Step 2: Convert to fraction form
    18,519.47/27,746.80 = 15,419.39/x
  3. Step 3: Cross multiply
    18,519.47x = 27,746.80 × 15,419.39
  4. Step 4: Simplify right side
    18,519.47x = 427,838,730.45
  5. Step 5: Solve for x
    x = 427,838,730.45/18,519.47
  6. Step 6: Final answer
    x = 23,102.10

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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.