Home / 13,458.11-18,580.93-12,621.65

Finding the Fourth Proportional to 13,458.11, 18,580.93 and 12,621.65

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Solution

The fourth proportional to 13,458.11, 18,580.93 and 12,621.65 is: 17,426.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458.11 : 18,580.93 = 12,621.65 : x
  2. Step 2: Convert to fraction form
    13,458.11/18,580.93 = 12,621.65/x
  3. Step 3: Cross multiply
    13,458.11x = 18,580.93 × 12,621.65
  4. Step 4: Simplify right side
    13,458.11x = 234,521,870.68
  5. Step 5: Solve for x
    x = 234,521,870.68/13,458.11
  6. Step 6: Final answer
    x = 17,426.07

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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.