Home / 21,822.02-30,116.96-12,261.93

Finding the Fourth Proportional to 21,822.02, 30,116.96 and 12,261.93

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Solution

The fourth proportional to 21,822.02, 30,116.96 and 12,261.93 is: 16,922.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,822.02 : 30,116.96 = 12,261.93 : x
  2. Step 2: Convert to fraction form
    21,822.02/30,116.96 = 12,261.93/x
  3. Step 3: Cross multiply
    21,822.02x = 30,116.96 × 12,261.93
  4. Step 4: Simplify right side
    21,822.02x = 369,292,040.01
  5. Step 5: Solve for x
    x = 369,292,040.01/21,822.02
  6. Step 6: Final answer
    x = 16,922.91

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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.