Home / 20,353.53-28,088.37-11,400.95

Finding the Fourth Proportional to 20,353.53, 28,088.37 and 11,400.95

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Solution

The fourth proportional to 20,353.53, 28,088.37 and 11,400.95 is: 15,733.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,353.53 : 28,088.37 = 11,400.95 : x
  2. Step 2: Convert to fraction form
    20,353.53/28,088.37 = 11,400.95/x
  3. Step 3: Cross multiply
    20,353.53x = 28,088.37 × 11,400.95
  4. Step 4: Simplify right side
    20,353.53x = 320,234,172.17
  5. Step 5: Solve for x
    x = 320,234,172.17/20,353.53
  6. Step 6: Final answer
    x = 15,733.60

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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.