Home / 21,516.06-29,689.41-12,557.07

Finding the Fourth Proportional to 21,516.06, 29,689.41 and 12,557.07

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Solution

The fourth proportional to 21,516.06, 29,689.41 and 12,557.07 is: 17,327.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,516.06 : 29,689.41 = 12,557.07 : x
  2. Step 2: Convert to fraction form
    21,516.06/29,689.41 = 12,557.07/x
  3. Step 3: Cross multiply
    21,516.06x = 29,689.41 × 12,557.07
  4. Step 4: Simplify right side
    21,516.06x = 372,811,999.63
  5. Step 5: Solve for x
    x = 372,811,999.63/21,516.06
  6. Step 6: Final answer
    x = 17,327.15

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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.