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Finding the Fourth Proportional to 19,889.59, 27,447.98 and 10,937.47

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Solution

The fourth proportional to 19,889.59, 27,447.98 and 10,937.47 is: 15,093.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,889.59 : 27,447.98 = 10,937.47 : x
  2. Step 2: Convert to fraction form
    19,889.59/27,447.98 = 10,937.47/x
  3. Step 3: Cross multiply
    19,889.59x = 27,447.98 × 10,937.47
  4. Step 4: Simplify right side
    19,889.59x = 300,211,457.81
  5. Step 5: Solve for x
    x = 300,211,457.81/19,889.59
  6. Step 6: Final answer
    x = 15,093.90

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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.