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Finding the Fourth Proportional to 18,897.92, 28,337.60 and 7,051.24

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Solution

The fourth proportional to 18,897.92, 28,337.60 and 7,051.24 is: 10,573.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,897.92 : 28,337.60 = 7,051.24 : x
  2. Step 2: Convert to fraction form
    18,897.92/28,337.60 = 7,051.24/x
  3. Step 3: Cross multiply
    18,897.92x = 28,337.60 × 7,051.24
  4. Step 4: Simplify right side
    18,897.92x = 199,815,218.62
  5. Step 5: Solve for x
    x = 199,815,218.62/18,897.92
  6. Step 6: Final answer
    x = 10,573.40

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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.