Home / 20,200.18-30,300.28-9,667.72

Finding the Fourth Proportional to 20,200.18, 30,300.28 and 9,667.72

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Solution

The fourth proportional to 20,200.18, 30,300.28 and 9,667.72 is: 14,501.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.18 : 30,300.28 = 9,667.72 : x
  2. Step 2: Convert to fraction form
    20,200.18/30,300.28 = 9,667.72/x
  3. Step 3: Cross multiply
    20,200.18x = 30,300.28 × 9,667.72
  4. Step 4: Simplify right side
    20,200.18x = 292,934,636.67
  5. Step 5: Solve for x
    x = 292,934,636.67/20,200.18
  6. Step 6: Final answer
    x = 14,501.59

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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.