Home / 21,243.74-29,298.92-18,855.45

Finding the Fourth Proportional to 21,243.74, 29,298.92 and 18,855.45

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Solution

The fourth proportional to 21,243.74, 29,298.92 and 18,855.45 is: 26,005.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243.74 : 29,298.92 = 18,855.45 : x
  2. Step 2: Convert to fraction form
    21,243.74/29,298.92 = 18,855.45/x
  3. Step 3: Cross multiply
    21,243.74x = 29,298.92 × 18,855.45
  4. Step 4: Simplify right side
    21,243.74x = 552,444,226.84
  5. Step 5: Solve for x
    x = 552,444,226.84/21,243.74
  6. Step 6: Final answer
    x = 26,005.04

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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.