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Finding the Fourth Proportional to 15,603.81, 23,405.64 and 3,917.03

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Solution

The fourth proportional to 15,603.81, 23,405.64 and 3,917.03 is: 5,875.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,603.81 : 23,405.64 = 3,917.03 : x
  2. Step 2: Convert to fraction form
    15,603.81/23,405.64 = 3,917.03/x
  3. Step 3: Cross multiply
    15,603.81x = 23,405.64 × 3,917.03
  4. Step 4: Simplify right side
    15,603.81x = 91,680,491.71
  5. Step 5: Solve for x
    x = 91,680,491.71/15,603.81
  6. Step 6: Final answer
    x = 5,875.52

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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.