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Finding the Fourth Proportional to 18,404.60, 25,398.30 and 10,021.10

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Solution

The fourth proportional to 18,404.60, 25,398.30 and 10,021.10 is: 13,829.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,404.60 : 25,398.30 = 10,021.10 : x
  2. Step 2: Convert to fraction form
    18,404.60/25,398.30 = 10,021.10/x
  3. Step 3: Cross multiply
    18,404.60x = 25,398.30 × 10,021.10
  4. Step 4: Simplify right side
    18,404.60x = 254,518,904.13
  5. Step 5: Solve for x
    x = 254,518,904.13/18,404.60
  6. Step 6: Final answer
    x = 13,829.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.