Home / 28,710.02-39,608.56-21,174.44

Finding the Fourth Proportional to 28,710.02, 39,608.56 and 21,174.44

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Solution

The fourth proportional to 28,710.02, 39,608.56 and 21,174.44 is: 29,212.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,710.02 : 39,608.56 = 21,174.44 : x
  2. Step 2: Convert to fraction form
    28,710.02/39,608.56 = 21,174.44/x
  3. Step 3: Cross multiply
    28,710.02x = 39,608.56 × 21,174.44
  4. Step 4: Simplify right side
    28,710.02x = 838,689,077.21
  5. Step 5: Solve for x
    x = 838,689,077.21/28,710.02
  6. Step 6: Final answer
    x = 29,212.42

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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.