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Finding the Fourth Proportional to 10,038.40, 15,051.60 and 6,145.60

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Solution

The fourth proportional to 10,038.40, 15,051.60 and 6,145.60 is: 9,214.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,038.40 : 15,051.60 = 6,145.60 : x
  2. Step 2: Convert to fraction form
    10,038.40/15,051.60 = 6,145.60/x
  3. Step 3: Cross multiply
    10,038.40x = 15,051.60 × 6,145.60
  4. Step 4: Simplify right side
    10,038.40x = 92,501,112.96
  5. Step 5: Solve for x
    x = 92,501,112.96/10,038.40
  6. Step 6: Final answer
    x = 9,214.73

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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.