Home / 21,249.66-29,323.63-11,688.94

Finding the Fourth Proportional to 21,249.66, 29,323.63 and 11,688.94

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Solution

The fourth proportional to 21,249.66, 29,323.63 and 11,688.94 is: 16,130.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,249.66 : 29,323.63 = 11,688.94 : x
  2. Step 2: Convert to fraction form
    21,249.66/29,323.63 = 11,688.94/x
  3. Step 3: Cross multiply
    21,249.66x = 29,323.63 × 11,688.94
  4. Step 4: Simplify right side
    21,249.66x = 342,762,151.65
  5. Step 5: Solve for x
    x = 342,762,151.65/21,249.66
  6. Step 6: Final answer
    x = 16,130.24

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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.