Home / 13,158.32-18,169.98-9,187.52

Finding the Fourth Proportional to 13,158.32, 18,169.98 and 9,187.52

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Solution

The fourth proportional to 13,158.32, 18,169.98 and 9,187.52 is: 12,686.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,158.32 : 18,169.98 = 9,187.52 : x
  2. Step 2: Convert to fraction form
    13,158.32/18,169.98 = 9,187.52/x
  3. Step 3: Cross multiply
    13,158.32x = 18,169.98 × 9,187.52
  4. Step 4: Simplify right side
    13,158.32x = 166,937,054.65
  5. Step 5: Solve for x
    x = 166,937,054.65/13,158.32
  6. Step 6: Final answer
    x = 12,686.81

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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.