Home / 20,111.30-30,117.72-14,173.60

Finding the Fourth Proportional to 20,111.30, 30,117.72 and 14,173.60

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Solution

The fourth proportional to 20,111.30, 30,117.72 and 14,173.60 is: 21,225.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111.30 : 30,117.72 = 14,173.60 : x
  2. Step 2: Convert to fraction form
    20,111.30/30,117.72 = 14,173.60/x
  3. Step 3: Cross multiply
    20,111.30x = 30,117.72 × 14,173.60
  4. Step 4: Simplify right side
    20,111.30x = 426,876,516.19
  5. Step 5: Solve for x
    x = 426,876,516.19/20,111.30
  6. Step 6: Final answer
    x = 21,225.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.