Home / 21,159.06-29,200.14-12,206.94

Finding the Fourth Proportional to 21,159.06, 29,200.14 and 12,206.94

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Solution

The fourth proportional to 21,159.06, 29,200.14 and 12,206.94 is: 16,845.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.06 : 29,200.14 = 12,206.94 : x
  2. Step 2: Convert to fraction form
    21,159.06/29,200.14 = 12,206.94/x
  3. Step 3: Cross multiply
    21,159.06x = 29,200.14 × 12,206.94
  4. Step 4: Simplify right side
    21,159.06x = 356,444,356.97
  5. Step 5: Solve for x
    x = 356,444,356.97/21,159.06
  6. Step 6: Final answer
    x = 16,845.94

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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.