Home / 21,281.37-29,368.02-11,721.06

Finding the Fourth Proportional to 21,281.37, 29,368.02 and 11,721.06

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Solution

The fourth proportional to 21,281.37, 29,368.02 and 11,721.06 is: 16,174.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,281.37 : 29,368.02 = 11,721.06 : x
  2. Step 2: Convert to fraction form
    21,281.37/29,368.02 = 11,721.06/x
  3. Step 3: Cross multiply
    21,281.37x = 29,368.02 × 11,721.06
  4. Step 4: Simplify right side
    21,281.37x = 344,224,385.12
  5. Step 5: Solve for x
    x = 344,224,385.12/21,281.37
  6. Step 6: Final answer
    x = 16,174.92

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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.