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Finding the Fourth Proportional to 20,729.60, 29,050.60 and 20,729.60

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Solution

The fourth proportional to 20,729.60, 29,050.60 and 20,729.60 is: 29,050.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.60 : 29,050.60 = 20,729.60 : x
  2. Step 2: Convert to fraction form
    20,729.60/29,050.60 = 20,729.60/x
  3. Step 3: Cross multiply
    20,729.60x = 29,050.60 × 20,729.60
  4. Step 4: Simplify right side
    20,729.60x = 602,207,317.76
  5. Step 5: Solve for x
    x = 602,207,317.76/20,729.60
  6. Step 6: Final answer
    x = 29,050.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.