Home / 15,471.47-21,350.40-8,758.37

Finding the Fourth Proportional to 15,471.47, 21,350.40 and 8,758.37

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Solution

The fourth proportional to 15,471.47, 21,350.40 and 8,758.37 is: 12,086.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,471.47 : 21,350.40 = 8,758.37 : x
  2. Step 2: Convert to fraction form
    15,471.47/21,350.40 = 8,758.37/x
  3. Step 3: Cross multiply
    15,471.47x = 21,350.40 × 8,758.37
  4. Step 4: Simplify right side
    15,471.47x = 186,994,702.85
  5. Step 5: Solve for x
    x = 186,994,702.85/15,471.47
  6. Step 6: Final answer
    x = 12,086.42

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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.