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Finding the Fourth Proportional to 34,269.40, 51,404.10 and 20,445.40

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Solution

The fourth proportional to 34,269.40, 51,404.10 and 20,445.40 is: 30,668.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,269.40 : 51,404.10 = 20,445.40 : x
  2. Step 2: Convert to fraction form
    34,269.40/51,404.10 = 20,445.40/x
  3. Step 3: Cross multiply
    34,269.40x = 51,404.10 × 20,445.40
  4. Step 4: Simplify right side
    34,269.40x = 1,050,977,386.14
  5. Step 5: Solve for x
    x = 1,050,977,386.14/34,269.40
  6. Step 6: Final answer
    x = 30,668.10

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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.