Home / 13,134.21-18,125.16-7,165.83

Finding the Fourth Proportional to 13,134.21, 18,125.16 and 7,165.83

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Solution

The fourth proportional to 13,134.21, 18,125.16 and 7,165.83 is: 9,888.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.21 : 18,125.16 = 7,165.83 : x
  2. Step 2: Convert to fraction form
    13,134.21/18,125.16 = 7,165.83/x
  3. Step 3: Cross multiply
    13,134.21x = 18,125.16 × 7,165.83
  4. Step 4: Simplify right side
    13,134.21x = 129,881,815.28
  5. Step 5: Solve for x
    x = 129,881,815.28/13,134.21
  6. Step 6: Final answer
    x = 9,888.82

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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.