Home / 21,096.02-29,108.40-12,143.90

Finding the Fourth Proportional to 21,096.02, 29,108.40 and 12,143.90

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Solution

The fourth proportional to 21,096.02, 29,108.40 and 12,143.90 is: 16,756.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,096.02 : 29,108.40 = 12,143.90 : x
  2. Step 2: Convert to fraction form
    21,096.02/29,108.40 = 12,143.90/x
  3. Step 3: Cross multiply
    21,096.02x = 29,108.40 × 12,143.90
  4. Step 4: Simplify right side
    21,096.02x = 353,489,498.76
  5. Step 5: Solve for x
    x = 353,489,498.76/21,096.02
  6. Step 6: Final answer
    x = 16,756.22

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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.