Home / 21,062.08-29,069.40-12,108.88

Finding the Fourth Proportional to 21,062.08, 29,069.40 and 12,108.88

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Solution

The fourth proportional to 21,062.08, 29,069.40 and 12,108.88 is: 16,712.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,062.08 : 29,069.40 = 12,108.88 : x
  2. Step 2: Convert to fraction form
    21,062.08/29,069.40 = 12,108.88/x
  3. Step 3: Cross multiply
    21,062.08x = 29,069.40 × 12,108.88
  4. Step 4: Simplify right side
    21,062.08x = 351,997,876.27
  5. Step 5: Solve for x
    x = 351,997,876.27/21,062.08
  6. Step 6: Final answer
    x = 16,712.40

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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.