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Finding the Fourth Proportional to 20,055.61, 30,050.61 and 10,685.69

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Solution

The fourth proportional to 20,055.61, 30,050.61 and 10,685.69 is: 16,011.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,055.61 : 30,050.61 = 10,685.69 : x
  2. Step 2: Convert to fraction form
    20,055.61/30,050.61 = 10,685.69/x
  3. Step 3: Cross multiply
    20,055.61x = 30,050.61 × 10,685.69
  4. Step 4: Simplify right side
    20,055.61x = 321,111,425.14
  5. Step 5: Solve for x
    x = 321,111,425.14/20,055.61
  6. Step 6: Final answer
    x = 16,011.05

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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.