Home / 15,621.31-21,534.98-11,137.28

Finding the Fourth Proportional to 15,621.31, 21,534.98 and 11,137.28

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Solution

The fourth proportional to 15,621.31, 21,534.98 and 11,137.28 is: 15,353.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.31 : 21,534.98 = 11,137.28 : x
  2. Step 2: Convert to fraction form
    15,621.31/21,534.98 = 11,137.28/x
  3. Step 3: Cross multiply
    15,621.31x = 21,534.98 × 11,137.28
  4. Step 4: Simplify right side
    15,621.31x = 239,841,122.47
  5. Step 5: Solve for x
    x = 239,841,122.47/15,621.31
  6. Step 6: Final answer
    x = 15,353.46

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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.