Home / 21,215.36-29,277.84-12,827.04

Finding the Fourth Proportional to 21,215.36, 29,277.84 and 12,827.04

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Solution

The fourth proportional to 21,215.36, 29,277.84 and 12,827.04 is: 17,701.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,215.36 : 29,277.84 = 12,827.04 : x
  2. Step 2: Convert to fraction form
    21,215.36/29,277.84 = 12,827.04/x
  3. Step 3: Cross multiply
    21,215.36x = 29,277.84 × 12,827.04
  4. Step 4: Simplify right side
    21,215.36x = 375,548,024.79
  5. Step 5: Solve for x
    x = 375,548,024.79/21,215.36
  6. Step 6: Final answer
    x = 17,701.70

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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.