Home / 21,097.70-29,113.88-12,145.48

Finding the Fourth Proportional to 21,097.70, 29,113.88 and 12,145.48

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Solution

The fourth proportional to 21,097.70, 29,113.88 and 12,145.48 is: 16,760.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,097.70 : 29,113.88 = 12,145.48 : x
  2. Step 2: Convert to fraction form
    21,097.70/29,113.88 = 12,145.48/x
  3. Step 3: Cross multiply
    21,097.70x = 29,113.88 × 12,145.48
  4. Step 4: Simplify right side
    21,097.70x = 353,602,047.26
  5. Step 5: Solve for x
    x = 353,602,047.26/21,097.70
  6. Step 6: Final answer
    x = 16,760.22

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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.