Home / 21,400.72-29,534.54-11,972.32

Finding the Fourth Proportional to 21,400.72, 29,534.54 and 11,972.32

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Solution

The fourth proportional to 21,400.72, 29,534.54 and 11,972.32 is: 16,522.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,400.72 : 29,534.54 = 11,972.32 : x
  2. Step 2: Convert to fraction form
    21,400.72/29,534.54 = 11,972.32/x
  3. Step 3: Cross multiply
    21,400.72x = 29,534.54 × 11,972.32
  4. Step 4: Simplify right side
    21,400.72x = 353,596,963.93
  5. Step 5: Solve for x
    x = 353,596,963.93/21,400.72
  6. Step 6: Final answer
    x = 16,522.67

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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.