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Finding the Fourth Proportional to 18,988.34, 28,482.41 and 10,550.87

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Solution

The fourth proportional to 18,988.34, 28,482.41 and 10,550.87 is: 15,826.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.34 : 28,482.41 = 10,550.87 : x
  2. Step 2: Convert to fraction form
    18,988.34/28,482.41 = 10,550.87/x
  3. Step 3: Cross multiply
    18,988.34x = 28,482.41 × 10,550.87
  4. Step 4: Simplify right side
    18,988.34x = 300,514,089.16
  5. Step 5: Solve for x
    x = 300,514,089.16/18,988.34
  6. Step 6: Final answer
    x = 15,826.25

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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.