Home / 21,207.72-29,269.00-12,133.92

Finding the Fourth Proportional to 21,207.72, 29,269.00 and 12,133.92

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Solution

The fourth proportional to 21,207.72, 29,269.00 and 12,133.92 is: 16,746.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,207.72 : 29,269.00 = 12,133.92 : x
  2. Step 2: Convert to fraction form
    21,207.72/29,269.00 = 12,133.92/x
  3. Step 3: Cross multiply
    21,207.72x = 29,269.00 × 12,133.92
  4. Step 4: Simplify right side
    21,207.72x = 355,147,643.81
  5. Step 5: Solve for x
    x = 355,147,643.81/21,207.72
  6. Step 6: Final answer
    x = 16,746.15

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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.