Home / 21,548.88-29,736.96-12,117.12

Finding the Fourth Proportional to 21,548.88, 29,736.96 and 12,117.12

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Solution

The fourth proportional to 21,548.88, 29,736.96 and 12,117.12 is: 16,721.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,548.88 : 29,736.96 = 12,117.12 : x
  2. Step 2: Convert to fraction form
    21,548.88/29,736.96 = 12,117.12/x
  3. Step 3: Cross multiply
    21,548.88x = 29,736.96 × 12,117.12
  4. Step 4: Simplify right side
    21,548.88x = 360,326,312.76
  5. Step 5: Solve for x
    x = 360,326,312.76/21,548.88
  6. Step 6: Final answer
    x = 16,721.35

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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.