Home / 18,897.30-28,345.80-5,749.68

Finding the Fourth Proportional to 18,897.30, 28,345.80 and 5,749.68

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Solution

The fourth proportional to 18,897.30, 28,345.80 and 5,749.68 is: 8,624.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,897.30 : 28,345.80 = 5,749.68 : x
  2. Step 2: Convert to fraction form
    18,897.30/28,345.80 = 5,749.68/x
  3. Step 3: Cross multiply
    18,897.30x = 28,345.80 × 5,749.68
  4. Step 4: Simplify right side
    18,897.30x = 162,979,374.86
  5. Step 5: Solve for x
    x = 162,979,374.86/18,897.30
  6. Step 6: Final answer
    x = 8,624.48

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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.