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Finding the Fourth Proportional to 20,018.68, 29,969.68 and 19,260.52

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Solution

The fourth proportional to 20,018.68, 29,969.68 and 19,260.52 is: 28,834.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,018.68 : 29,969.68 = 19,260.52 : x
  2. Step 2: Convert to fraction form
    20,018.68/29,969.68 = 19,260.52/x
  3. Step 3: Cross multiply
    20,018.68x = 29,969.68 × 19,260.52
  4. Step 4: Simplify right side
    20,018.68x = 577,231,621.03
  5. Step 5: Solve for x
    x = 577,231,621.03/20,018.68
  6. Step 6: Final answer
    x = 28,834.65

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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.