Home / 20,005.62-30,005.01-8,315.70

Finding the Fourth Proportional to 20,005.62, 30,005.01 and 8,315.70

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Solution

The fourth proportional to 20,005.62, 30,005.01 and 8,315.70 is: 12,472.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,005.62 : 30,005.01 = 8,315.70 : x
  2. Step 2: Convert to fraction form
    20,005.62/30,005.01 = 8,315.70/x
  3. Step 3: Cross multiply
    20,005.62x = 30,005.01 × 8,315.70
  4. Step 4: Simplify right side
    20,005.62x = 249,512,661.66
  5. Step 5: Solve for x
    x = 249,512,661.66/20,005.62
  6. Step 6: Final answer
    x = 12,472.13

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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.