Home / 20,354.76-28,088.75-11,401.80

Finding the Fourth Proportional to 20,354.76, 28,088.75 and 11,401.80

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Solution

The fourth proportional to 20,354.76, 28,088.75 and 11,401.80 is: 15,734.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,354.76 : 28,088.75 = 11,401.80 : x
  2. Step 2: Convert to fraction form
    20,354.76/28,088.75 = 11,401.80/x
  3. Step 3: Cross multiply
    20,354.76x = 28,088.75 × 11,401.80
  4. Step 4: Simplify right side
    20,354.76x = 320,262,252.74
  5. Step 5: Solve for x
    x = 320,262,252.74/20,354.76
  6. Step 6: Final answer
    x = 15,734.02

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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.