Home / 21,392.64-29,521.85-11,961.23

Finding the Fourth Proportional to 21,392.64, 29,521.85 and 11,961.23

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Solution

The fourth proportional to 21,392.64, 29,521.85 and 11,961.23 is: 16,506.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,392.64 : 29,521.85 = 11,961.23 : x
  2. Step 2: Convert to fraction form
    21,392.64/29,521.85 = 11,961.23/x
  3. Step 3: Cross multiply
    21,392.64x = 29,521.85 × 11,961.23
  4. Step 4: Simplify right side
    21,392.64x = 353,117,430.46
  5. Step 5: Solve for x
    x = 353,117,430.46/21,392.64
  6. Step 6: Final answer
    x = 16,506.49

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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.