Home / 20,545.96-30,820.86-9,455.72

Finding the Fourth Proportional to 20,545.96, 30,820.86 and 9,455.72

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Solution

The fourth proportional to 20,545.96, 30,820.86 and 9,455.72 is: 14,184.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.96 : 30,820.86 = 9,455.72 : x
  2. Step 2: Convert to fraction form
    20,545.96/30,820.86 = 9,455.72/x
  3. Step 3: Cross multiply
    20,545.96x = 30,820.86 × 9,455.72
  4. Step 4: Simplify right side
    20,545.96x = 291,433,422.32
  5. Step 5: Solve for x
    x = 291,433,422.32/20,545.96
  6. Step 6: Final answer
    x = 14,184.46

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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.