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Finding the Fourth Proportional to 10,999.65, 15,188.22 and 10,160.01

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Solution

The fourth proportional to 10,999.65, 15,188.22 and 10,160.01 is: 14,028.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,999.65 : 15,188.22 = 10,160.01 : x
  2. Step 2: Convert to fraction form
    10,999.65/15,188.22 = 10,160.01/x
  3. Step 3: Cross multiply
    10,999.65x = 15,188.22 × 10,160.01
  4. Step 4: Simplify right side
    10,999.65x = 154,312,467.08
  5. Step 5: Solve for x
    x = 154,312,467.08/10,999.65
  6. Step 6: Final answer
    x = 14,028.85

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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.