Home / 26,443.80-39,655.40-13,287

Finding the Fourth Proportional to 26,443.80, 39,655.40 and 13,287

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Solution

The fourth proportional to 26,443.80, 39,655.40 and 13,287 is: 19,925.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,443.80 : 39,655.40 = 13,287 : x
  2. Step 2: Convert to fraction form
    26,443.80/39,655.40 = 13,287/x
  3. Step 3: Cross multiply
    26,443.80x = 39,655.40 × 13,287
  4. Step 4: Simplify right side
    26,443.80x = 526,901,299.80
  5. Step 5: Solve for x
    x = 526,901,299.80/26,443.80
  6. Step 6: Final answer
    x = 19,925.32

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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.