Home / 20,328.43-28,056.18-11,712.94

Finding the Fourth Proportional to 20,328.43, 28,056.18 and 11,712.94

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Solution

The fourth proportional to 20,328.43, 28,056.18 and 11,712.94 is: 16,165.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.43 : 28,056.18 = 11,712.94 : x
  2. Step 2: Convert to fraction form
    20,328.43/28,056.18 = 11,712.94/x
  3. Step 3: Cross multiply
    20,328.43x = 28,056.18 × 11,712.94
  4. Step 4: Simplify right side
    20,328.43x = 328,620,319.16
  5. Step 5: Solve for x
    x = 328,620,319.16/20,328.43
  6. Step 6: Final answer
    x = 16,165.55

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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.