Home / 20,106.72-30,160.08-10,890.72

Finding the Fourth Proportional to 20,106.72, 30,160.08 and 10,890.72

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Solution

The fourth proportional to 20,106.72, 30,160.08 and 10,890.72 is: 16,336.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.72 : 30,160.08 = 10,890.72 : x
  2. Step 2: Convert to fraction form
    20,106.72/30,160.08 = 10,890.72/x
  3. Step 3: Cross multiply
    20,106.72x = 30,160.08 × 10,890.72
  4. Step 4: Simplify right side
    20,106.72x = 328,464,986.46
  5. Step 5: Solve for x
    x = 328,464,986.46/20,106.72
  6. Step 6: Final answer
    x = 16,336.08

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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.