Home / 20,881.23-28,820.10-16,334.91

Finding the Fourth Proportional to 20,881.23, 28,820.10 and 16,334.91

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Solution

The fourth proportional to 20,881.23, 28,820.10 and 16,334.91 is: 22,545.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.23 : 28,820.10 = 16,334.91 : x
  2. Step 2: Convert to fraction form
    20,881.23/28,820.10 = 16,334.91/x
  3. Step 3: Cross multiply
    20,881.23x = 28,820.10 × 16,334.91
  4. Step 4: Simplify right side
    20,881.23x = 470,773,739.69
  5. Step 5: Solve for x
    x = 470,773,739.69/20,881.23
  6. Step 6: Final answer
    x = 22,545.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.