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Finding the Fourth Proportional to 18,897.57, 28,303.25 and 9,043.81

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Solution

The fourth proportional to 18,897.57, 28,303.25 and 9,043.81 is: 13,545.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,897.57 : 28,303.25 = 9,043.81 : x
  2. Step 2: Convert to fraction form
    18,897.57/28,303.25 = 9,043.81/x
  3. Step 3: Cross multiply
    18,897.57x = 28,303.25 × 9,043.81
  4. Step 4: Simplify right side
    18,897.57x = 255,969,099.41
  5. Step 5: Solve for x
    x = 255,969,099.41/18,897.57
  6. Step 6: Final answer
    x = 13,545.08

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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.