Home / 15,629.13-21,545.79-11,145.11

Finding the Fourth Proportional to 15,629.13, 21,545.79 and 11,145.11

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Solution

The fourth proportional to 15,629.13, 21,545.79 and 11,145.11 is: 15,364.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,629.13 : 21,545.79 = 11,145.11 : x
  2. Step 2: Convert to fraction form
    15,629.13/21,545.79 = 11,145.11/x
  3. Step 3: Cross multiply
    15,629.13x = 21,545.79 × 11,145.11
  4. Step 4: Simplify right side
    15,629.13x = 240,130,091.86
  5. Step 5: Solve for x
    x = 240,130,091.86/15,629.13
  6. Step 6: Final answer
    x = 15,364.26

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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.