Home / 21,677.02-29,913.90-12,116.30

Finding the Fourth Proportional to 21,677.02, 29,913.90 and 12,116.30

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Solution

The fourth proportional to 21,677.02, 29,913.90 and 12,116.30 is: 16,720.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,677.02 : 29,913.90 = 12,116.30 : x
  2. Step 2: Convert to fraction form
    21,677.02/29,913.90 = 12,116.30/x
  3. Step 3: Cross multiply
    21,677.02x = 29,913.90 × 12,116.30
  4. Step 4: Simplify right side
    21,677.02x = 362,445,786.57
  5. Step 5: Solve for x
    x = 362,445,786.57/21,677.02
  6. Step 6: Final answer
    x = 16,720.28

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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.