Home / 21,440.36-29,588.28-12,008.72

Finding the Fourth Proportional to 21,440.36, 29,588.28 and 12,008.72

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Solution

The fourth proportional to 21,440.36, 29,588.28 and 12,008.72 is: 16,572.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.36 : 29,588.28 = 12,008.72 : x
  2. Step 2: Convert to fraction form
    21,440.36/29,588.28 = 12,008.72/x
  3. Step 3: Cross multiply
    21,440.36x = 29,588.28 × 12,008.72
  4. Step 4: Simplify right side
    21,440.36x = 355,317,369.80
  5. Step 5: Solve for x
    x = 355,317,369.80/21,440.36
  6. Step 6: Final answer
    x = 16,572.36

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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.