Home / 19,365.38-29,036.34-8,689.78

Finding the Fourth Proportional to 19,365.38, 29,036.34 and 8,689.78

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Solution

The fourth proportional to 19,365.38, 29,036.34 and 8,689.78 is: 13,029.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,365.38 : 29,036.34 = 8,689.78 : x
  2. Step 2: Convert to fraction form
    19,365.38/29,036.34 = 8,689.78/x
  3. Step 3: Cross multiply
    19,365.38x = 29,036.34 × 8,689.78
  4. Step 4: Simplify right side
    19,365.38x = 252,319,406.61
  5. Step 5: Solve for x
    x = 252,319,406.61/19,365.38
  6. Step 6: Final answer
    x = 13,029.41

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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.