Home / 20,148.10-30,214.95-7,000.90

Finding the Fourth Proportional to 20,148.10, 30,214.95 and 7,000.90

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Solution

The fourth proportional to 20,148.10, 30,214.95 and 7,000.90 is: 10,498.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.10 : 30,214.95 = 7,000.90 : x
  2. Step 2: Convert to fraction form
    20,148.10/30,214.95 = 7,000.90/x
  3. Step 3: Cross multiply
    20,148.10x = 30,214.95 × 7,000.90
  4. Step 4: Simplify right side
    20,148.10x = 211,531,843.46
  5. Step 5: Solve for x
    x = 211,531,843.46/20,148.10
  6. Step 6: Final answer
    x = 10,498.85

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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.