Home / 21,079.40-29,095.79-12,133.19

Finding the Fourth Proportional to 21,079.40, 29,095.79 and 12,133.19

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Solution

The fourth proportional to 21,079.40, 29,095.79 and 12,133.19 is: 16,747.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.40 : 29,095.79 = 12,133.19 : x
  2. Step 2: Convert to fraction form
    21,079.40/29,095.79 = 12,133.19/x
  3. Step 3: Cross multiply
    21,079.40x = 29,095.79 × 12,133.19
  4. Step 4: Simplify right side
    21,079.40x = 353,024,760.34
  5. Step 5: Solve for x
    x = 353,024,760.34/21,079.40
  6. Step 6: Final answer
    x = 16,747.39

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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.