Home / 20,688.17-28,551.77-12,193.03

Finding the Fourth Proportional to 20,688.17, 28,551.77 and 12,193.03

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Solution

The fourth proportional to 20,688.17, 28,551.77 and 12,193.03 is: 16,827.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.17 : 28,551.77 = 12,193.03 : x
  2. Step 2: Convert to fraction form
    20,688.17/28,551.77 = 12,193.03/x
  3. Step 3: Cross multiply
    20,688.17x = 28,551.77 × 12,193.03
  4. Step 4: Simplify right side
    20,688.17x = 348,132,475.89
  5. Step 5: Solve for x
    x = 348,132,475.89/20,688.17
  6. Step 6: Final answer
    x = 16,827.61

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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.