Home / 15,620.62-21,565.83-9,660.28

Finding the Fourth Proportional to 15,620.62, 21,565.83 and 9,660.28

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Solution

The fourth proportional to 15,620.62, 21,565.83 and 9,660.28 is: 13,336.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,620.62 : 21,565.83 = 9,660.28 : x
  2. Step 2: Convert to fraction form
    15,620.62/21,565.83 = 9,660.28/x
  3. Step 3: Cross multiply
    15,620.62x = 21,565.83 × 9,660.28
  4. Step 4: Simplify right side
    15,620.62x = 208,331,956.23
  5. Step 5: Solve for x
    x = 208,331,956.23/15,620.62
  6. Step 6: Final answer
    x = 13,336.98

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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.