Home / 15,426.24-21,272.30-13,195.50

Finding the Fourth Proportional to 15,426.24, 21,272.30 and 13,195.50

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Solution

The fourth proportional to 15,426.24, 21,272.30 and 13,195.50 is: 18,196.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,426.24 : 21,272.30 = 13,195.50 : x
  2. Step 2: Convert to fraction form
    15,426.24/21,272.30 = 13,195.50/x
  3. Step 3: Cross multiply
    15,426.24x = 21,272.30 × 13,195.50
  4. Step 4: Simplify right side
    15,426.24x = 280,698,634.65
  5. Step 5: Solve for x
    x = 280,698,634.65/15,426.24
  6. Step 6: Final answer
    x = 18,196.18

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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.