Home / 21,060.20-29,068.07-12,112.88

Finding the Fourth Proportional to 21,060.20, 29,068.07 and 12,112.88

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Solution

The fourth proportional to 21,060.20, 29,068.07 and 12,112.88 is: 16,718.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.20 : 29,068.07 = 12,112.88 : x
  2. Step 2: Convert to fraction form
    21,060.20/29,068.07 = 12,112.88/x
  3. Step 3: Cross multiply
    21,060.20x = 29,068.07 × 12,112.88
  4. Step 4: Simplify right side
    21,060.20x = 352,097,837.84
  5. Step 5: Solve for x
    x = 352,097,837.84/21,060.20
  6. Step 6: Final answer
    x = 16,718.63

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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.