Home / 9,997.29-14,990.13-3,421.71

Finding the Fourth Proportional to 9,997.29, 14,990.13 and 3,421.71

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Solution

The fourth proportional to 9,997.29, 14,990.13 and 3,421.71 is: 5,130.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,997.29 : 14,990.13 = 3,421.71 : x
  2. Step 2: Convert to fraction form
    9,997.29/14,990.13 = 3,421.71/x
  3. Step 3: Cross multiply
    9,997.29x = 14,990.13 × 3,421.71
  4. Step 4: Simplify right side
    9,997.29x = 51,291,877.72
  5. Step 5: Solve for x
    x = 51,291,877.72/9,997.29
  6. Step 6: Final answer
    x = 5,130.58

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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.