Home / 21,686.04-29,923.57-12,736.43

Finding the Fourth Proportional to 21,686.04, 29,923.57 and 12,736.43

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Solution

The fourth proportional to 21,686.04, 29,923.57 and 12,736.43 is: 17,574.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,686.04 : 29,923.57 = 12,736.43 : x
  2. Step 2: Convert to fraction form
    21,686.04/29,923.57 = 12,736.43/x
  3. Step 3: Cross multiply
    21,686.04x = 29,923.57 × 12,736.43
  4. Step 4: Simplify right side
    21,686.04x = 381,119,382.14
  5. Step 5: Solve for x
    x = 381,119,382.14/21,686.04
  6. Step 6: Final answer
    x = 17,574.41

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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.