Home / 21,557.24-29,739.16-15,579.44

Finding the Fourth Proportional to 21,557.24, 29,739.16 and 15,579.44

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Solution

The fourth proportional to 21,557.24, 29,739.16 and 15,579.44 is: 21,492.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,557.24 : 29,739.16 = 15,579.44 : x
  2. Step 2: Convert to fraction form
    21,557.24/29,739.16 = 15,579.44/x
  3. Step 3: Cross multiply
    21,557.24x = 29,739.16 × 15,579.44
  4. Step 4: Simplify right side
    21,557.24x = 463,319,458.87
  5. Step 5: Solve for x
    x = 463,319,458.87/21,557.24
  6. Step 6: Final answer
    x = 21,492.52

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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.