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Finding the Fourth Proportional to 20,342.60, 30,513.90 and 10,501.10

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Solution

The fourth proportional to 20,342.60, 30,513.90 and 10,501.10 is: 15,751.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,342.60 : 30,513.90 = 10,501.10 : x
  2. Step 2: Convert to fraction form
    20,342.60/30,513.90 = 10,501.10/x
  3. Step 3: Cross multiply
    20,342.60x = 30,513.90 × 10,501.10
  4. Step 4: Simplify right side
    20,342.60x = 320,429,515.29
  5. Step 5: Solve for x
    x = 320,429,515.29/20,342.60
  6. Step 6: Final answer
    x = 15,751.65

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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.