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Finding the Fourth Proportional to 14,003.81, 20,971.13 and 10,437.38

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Solution

The fourth proportional to 14,003.81, 20,971.13 and 10,437.38 is: 15,630.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,003.81 : 20,971.13 = 10,437.38 : x
  2. Step 2: Convert to fraction form
    14,003.81/20,971.13 = 10,437.38/x
  3. Step 3: Cross multiply
    14,003.81x = 20,971.13 × 10,437.38
  4. Step 4: Simplify right side
    14,003.81x = 218,883,495.80
  5. Step 5: Solve for x
    x = 218,883,495.80/14,003.81
  6. Step 6: Final answer
    x = 15,630.29

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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.