Home / 11,815.08-16,291.14-9,423.18

Finding the Fourth Proportional to 11,815.08, 16,291.14 and 9,423.18

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Solution

The fourth proportional to 11,815.08, 16,291.14 and 9,423.18 is: 12,993.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.08 : 16,291.14 = 9,423.18 : x
  2. Step 2: Convert to fraction form
    11,815.08/16,291.14 = 9,423.18/x
  3. Step 3: Cross multiply
    11,815.08x = 16,291.14 × 9,423.18
  4. Step 4: Simplify right side
    11,815.08x = 153,514,344.63
  5. Step 5: Solve for x
    x = 153,514,344.63/11,815.08
  6. Step 6: Final answer
    x = 12,993.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.