Home / 19,486.40-26,890.87-10,988.39

Finding the Fourth Proportional to 19,486.40, 26,890.87 and 10,988.39

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Solution

The fourth proportional to 19,486.40, 26,890.87 and 10,988.39 is: 15,163.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,486.40 : 26,890.87 = 10,988.39 : x
  2. Step 2: Convert to fraction form
    19,486.40/26,890.87 = 10,988.39/x
  3. Step 3: Cross multiply
    19,486.40x = 26,890.87 × 10,988.39
  4. Step 4: Simplify right side
    19,486.40x = 295,487,177.60
  5. Step 5: Solve for x
    x = 295,487,177.60/19,486.40
  6. Step 6: Final answer
    x = 15,163.76

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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.