Home / 21,634.02-29,855.34-12,687.98

Finding the Fourth Proportional to 21,634.02, 29,855.34 and 12,687.98

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Solution

The fourth proportional to 21,634.02, 29,855.34 and 12,687.98 is: 17,509.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,634.02 : 29,855.34 = 12,687.98 : x
  2. Step 2: Convert to fraction form
    21,634.02/29,855.34 = 12,687.98/x
  3. Step 3: Cross multiply
    21,634.02x = 29,855.34 × 12,687.98
  4. Step 4: Simplify right side
    21,634.02x = 378,803,807.54
  5. Step 5: Solve for x
    x = 378,803,807.54/21,634.02
  6. Step 6: Final answer
    x = 17,509.64

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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.