Home / 13,590.34-18,760.01-9,112.46

Finding the Fourth Proportional to 13,590.34, 18,760.01 and 9,112.46

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Solution

The fourth proportional to 13,590.34, 18,760.01 and 9,112.46 is: 12,578.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.34 : 18,760.01 = 9,112.46 : x
  2. Step 2: Convert to fraction form
    13,590.34/18,760.01 = 9,112.46/x
  3. Step 3: Cross multiply
    13,590.34x = 18,760.01 × 9,112.46
  4. Step 4: Simplify right side
    13,590.34x = 170,949,840.72
  5. Step 5: Solve for x
    x = 170,949,840.72/13,590.34
  6. Step 6: Final answer
    x = 12,578.78

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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.