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Finding the Fourth Proportional to 15,429.60, 23,144.40 and 11,201.40

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Solution

The fourth proportional to 15,429.60, 23,144.40 and 11,201.40 is: 16,802.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,429.60 : 23,144.40 = 11,201.40 : x
  2. Step 2: Convert to fraction form
    15,429.60/23,144.40 = 11,201.40/x
  3. Step 3: Cross multiply
    15,429.60x = 23,144.40 × 11,201.40
  4. Step 4: Simplify right side
    15,429.60x = 259,249,682.16
  5. Step 5: Solve for x
    x = 259,249,682.16/15,429.60
  6. Step 6: Final answer
    x = 16,802.10

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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.