Home / 21,429.75-29,574.02-11,998.32

Finding the Fourth Proportional to 21,429.75, 29,574.02 and 11,998.32

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Solution

The fourth proportional to 21,429.75, 29,574.02 and 11,998.32 is: 16,558.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,429.75 : 29,574.02 = 11,998.32 : x
  2. Step 2: Convert to fraction form
    21,429.75/29,574.02 = 11,998.32/x
  3. Step 3: Cross multiply
    21,429.75x = 29,574.02 × 11,998.32
  4. Step 4: Simplify right side
    21,429.75x = 354,838,555.65
  5. Step 5: Solve for x
    x = 354,838,555.65/21,429.75
  6. Step 6: Final answer
    x = 16,558.22

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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.