Home / 21,647.48-29,873.22-12,219.08

Finding the Fourth Proportional to 21,647.48, 29,873.22 and 12,219.08

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Solution

The fourth proportional to 21,647.48, 29,873.22 and 12,219.08 is: 16,862.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,647.48 : 29,873.22 = 12,219.08 : x
  2. Step 2: Convert to fraction form
    21,647.48/29,873.22 = 12,219.08/x
  3. Step 3: Cross multiply
    21,647.48x = 29,873.22 × 12,219.08
  4. Step 4: Simplify right side
    21,647.48x = 365,023,265.04
  5. Step 5: Solve for x
    x = 365,023,265.04/21,647.48
  6. Step 6: Final answer
    x = 16,862.16

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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.