Home / 21,186.63-29,221.02-14,811.12

Finding the Fourth Proportional to 21,186.63, 29,221.02 and 14,811.12

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Solution

The fourth proportional to 21,186.63, 29,221.02 and 14,811.12 is: 20,427.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.63 : 29,221.02 = 14,811.12 : x
  2. Step 2: Convert to fraction form
    21,186.63/29,221.02 = 14,811.12/x
  3. Step 3: Cross multiply
    21,186.63x = 29,221.02 × 14,811.12
  4. Step 4: Simplify right side
    21,186.63x = 432,796,033.74
  5. Step 5: Solve for x
    x = 432,796,033.74/21,186.63
  6. Step 6: Final answer
    x = 20,427.79

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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.