Home / 15,869.64-21,901.68-9,155.58

Finding the Fourth Proportional to 15,869.64, 21,901.68 and 9,155.58

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Solution

The fourth proportional to 15,869.64, 21,901.68 and 9,155.58 is: 12,635.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.64 : 21,901.68 = 9,155.58 : x
  2. Step 2: Convert to fraction form
    15,869.64/21,901.68 = 9,155.58/x
  3. Step 3: Cross multiply
    15,869.64x = 21,901.68 × 9,155.58
  4. Step 4: Simplify right side
    15,869.64x = 200,522,583.37
  5. Step 5: Solve for x
    x = 200,522,583.37/15,869.64
  6. Step 6: Final answer
    x = 12,635.61

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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.