Home / 15,210.06-20,999.76-13,613.94

Finding the Fourth Proportional to 15,210.06, 20,999.76 and 13,613.94

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Solution

The fourth proportional to 15,210.06, 20,999.76 and 13,613.94 is: 18,796.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,210.06 : 20,999.76 = 13,613.94 : x
  2. Step 2: Convert to fraction form
    15,210.06/20,999.76 = 13,613.94/x
  3. Step 3: Cross multiply
    15,210.06x = 20,999.76 × 13,613.94
  4. Step 4: Simplify right side
    15,210.06x = 285,889,472.65
  5. Step 5: Solve for x
    x = 285,889,472.65/15,210.06
  6. Step 6: Final answer
    x = 18,796.08

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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.