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Finding the Fourth Proportional to 28,423.02, 42,638.42 and 9,698.02

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Solution

The fourth proportional to 28,423.02, 42,638.42 and 9,698.02 is: 14,548.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,423.02 : 42,638.42 = 9,698.02 : x
  2. Step 2: Convert to fraction form
    28,423.02/42,638.42 = 9,698.02/x
  3. Step 3: Cross multiply
    28,423.02x = 42,638.42 × 9,698.02
  4. Step 4: Simplify right side
    28,423.02x = 413,508,249.93
  5. Step 5: Solve for x
    x = 413,508,249.93/28,423.02
  6. Step 6: Final answer
    x = 14,548.36

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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.