Home / 20,206.58-30,314.69-10,186.71

Finding the Fourth Proportional to 20,206.58, 30,314.69 and 10,186.71

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Solution

The fourth proportional to 20,206.58, 30,314.69 and 10,186.71 is: 15,282.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,206.58 : 30,314.69 = 10,186.71 : x
  2. Step 2: Convert to fraction form
    20,206.58/30,314.69 = 10,186.71/x
  3. Step 3: Cross multiply
    20,206.58x = 30,314.69 × 10,186.71
  4. Step 4: Simplify right side
    20,206.58x = 308,806,904.84
  5. Step 5: Solve for x
    x = 308,806,904.84/20,206.58
  6. Step 6: Final answer
    x = 15,282.50

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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.