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Finding the Fourth Proportional to 23,390.64, 32,300.64 and 15,021.72

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Solution

The fourth proportional to 23,390.64, 32,300.64 and 15,021.72 is: 20,743.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,390.64 : 32,300.64 = 15,021.72 : x
  2. Step 2: Convert to fraction form
    23,390.64/32,300.64 = 15,021.72/x
  3. Step 3: Cross multiply
    23,390.64x = 32,300.64 × 15,021.72
  4. Step 4: Simplify right side
    23,390.64x = 485,211,169.90
  5. Step 5: Solve for x
    x = 485,211,169.90/23,390.64
  6. Step 6: Final answer
    x = 20,743.82

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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.