Home / 21,342.48-29,451.01-12,388.54

Finding the Fourth Proportional to 21,342.48, 29,451.01 and 12,388.54

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Solution

The fourth proportional to 21,342.48, 29,451.01 and 12,388.54 is: 17,095.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,342.48 : 29,451.01 = 12,388.54 : x
  2. Step 2: Convert to fraction form
    21,342.48/29,451.01 = 12,388.54/x
  3. Step 3: Cross multiply
    21,342.48x = 29,451.01 × 12,388.54
  4. Step 4: Simplify right side
    21,342.48x = 364,854,953.48
  5. Step 5: Solve for x
    x = 364,854,953.48/21,342.48
  6. Step 6: Final answer
    x = 17,095.25

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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.