Home / 21,321.06-29,422.74-12,370.08

Finding the Fourth Proportional to 21,321.06, 29,422.74 and 12,370.08

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Solution

The fourth proportional to 21,321.06, 29,422.74 and 12,370.08 is: 17,070.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,321.06 : 29,422.74 = 12,370.08 : x
  2. Step 2: Convert to fraction form
    21,321.06/29,422.74 = 12,370.08/x
  3. Step 3: Cross multiply
    21,321.06x = 29,422.74 × 12,370.08
  4. Step 4: Simplify right side
    21,321.06x = 363,961,647.62
  5. Step 5: Solve for x
    x = 363,961,647.62/21,321.06
  6. Step 6: Final answer
    x = 17,070.52

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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.