Home / 21,632.49-29,853.23-12,686.45

Finding the Fourth Proportional to 21,632.49, 29,853.23 and 12,686.45

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Solution

The fourth proportional to 21,632.49, 29,853.23 and 12,686.45 is: 17,507.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,632.49 : 29,853.23 = 12,686.45 : x
  2. Step 2: Convert to fraction form
    21,632.49/29,853.23 = 12,686.45/x
  3. Step 3: Cross multiply
    21,632.49x = 29,853.23 × 12,686.45
  4. Step 4: Simplify right side
    21,632.49x = 378,731,297.04
  5. Step 5: Solve for x
    x = 378,731,297.04/21,632.49
  6. Step 6: Final answer
    x = 17,507.52

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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.