Home / 21,118.02-29,146.14-12,043.40

Finding the Fourth Proportional to 21,118.02, 29,146.14 and 12,043.40

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Solution

The fourth proportional to 21,118.02, 29,146.14 and 12,043.40 is: 16,621.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,118.02 : 29,146.14 = 12,043.40 : x
  2. Step 2: Convert to fraction form
    21,118.02/29,146.14 = 12,043.40/x
  3. Step 3: Cross multiply
    21,118.02x = 29,146.14 × 12,043.40
  4. Step 4: Simplify right side
    21,118.02x = 351,018,717.92
  5. Step 5: Solve for x
    x = 351,018,717.92/21,118.02
  6. Step 6: Final answer
    x = 16,621.76

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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.