Home / 13,001.40-19,490.13-4,231.80

Finding the Fourth Proportional to 13,001.40, 19,490.13 and 4,231.80

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Solution

The fourth proportional to 13,001.40, 19,490.13 and 4,231.80 is: 6,343.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,001.40 : 19,490.13 = 4,231.80 : x
  2. Step 2: Convert to fraction form
    13,001.40/19,490.13 = 4,231.80/x
  3. Step 3: Cross multiply
    13,001.40x = 19,490.13 × 4,231.80
  4. Step 4: Simplify right side
    13,001.40x = 82,478,332.13
  5. Step 5: Solve for x
    x = 82,478,332.13/13,001.40
  6. Step 6: Final answer
    x = 6,343.80

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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.