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Finding the Fourth Proportional to 11,152.01, 15,389.68 and 6,436.19

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Solution

The fourth proportional to 11,152.01, 15,389.68 and 6,436.19 is: 8,881.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,152.01 : 15,389.68 = 6,436.19 : x
  2. Step 2: Convert to fraction form
    11,152.01/15,389.68 = 6,436.19/x
  3. Step 3: Cross multiply
    11,152.01x = 15,389.68 × 6,436.19
  4. Step 4: Simplify right side
    11,152.01x = 99,050,904.52
  5. Step 5: Solve for x
    x = 99,050,904.52/11,152.01
  6. Step 6: Final answer
    x = 8,881.89

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.