Home / 21,150.65-29,187.95-11,719.22

Finding the Fourth Proportional to 21,150.65, 29,187.95 and 11,719.22

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Solution

The fourth proportional to 21,150.65, 29,187.95 and 11,719.22 is: 16,172.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150.65 : 29,187.95 = 11,719.22 : x
  2. Step 2: Convert to fraction form
    21,150.65/29,187.95 = 11,719.22/x
  3. Step 3: Cross multiply
    21,150.65x = 29,187.95 × 11,719.22
  4. Step 4: Simplify right side
    21,150.65x = 342,059,802.86
  5. Step 5: Solve for x
    x = 342,059,802.86/21,150.65
  6. Step 6: Final answer
    x = 16,172.54

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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.