Home / 19,995.21-29,985.06-6,665.61

Finding the Fourth Proportional to 19,995.21, 29,985.06 and 6,665.61

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Solution

The fourth proportional to 19,995.21, 29,985.06 and 6,665.61 is: 9,995.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,995.21 : 29,985.06 = 6,665.61 : x
  2. Step 2: Convert to fraction form
    19,995.21/29,985.06 = 6,665.61/x
  3. Step 3: Cross multiply
    19,995.21x = 29,985.06 × 6,665.61
  4. Step 4: Simplify right side
    19,995.21x = 199,868,715.79
  5. Step 5: Solve for x
    x = 199,868,715.79/19,995.21
  6. Step 6: Final answer
    x = 9,995.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.