Home / 15,436.74-21,303.42-8,722.64

Finding the Fourth Proportional to 15,436.74, 21,303.42 and 8,722.64

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Solution

The fourth proportional to 15,436.74, 21,303.42 and 8,722.64 is: 12,037.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,436.74 : 21,303.42 = 8,722.64 : x
  2. Step 2: Convert to fraction form
    15,436.74/21,303.42 = 8,722.64/x
  3. Step 3: Cross multiply
    15,436.74x = 21,303.42 × 8,722.64
  4. Step 4: Simplify right side
    15,436.74x = 185,822,063.43
  5. Step 5: Solve for x
    x = 185,822,063.43/15,436.74
  6. Step 6: Final answer
    x = 12,037.65

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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.