Home / 21,018.49-31,537.02-11,020.84

Finding the Fourth Proportional to 21,018.49, 31,537.02 and 11,020.84

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Solution

The fourth proportional to 21,018.49, 31,537.02 and 11,020.84 is: 16,536.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018.49 : 31,537.02 = 11,020.84 : x
  2. Step 2: Convert to fraction form
    21,018.49/31,537.02 = 11,020.84/x
  3. Step 3: Cross multiply
    21,018.49x = 31,537.02 × 11,020.84
  4. Step 4: Simplify right side
    21,018.49x = 347,564,475.24
  5. Step 5: Solve for x
    x = 347,564,475.24/21,018.49
  6. Step 6: Final answer
    x = 16,536.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.