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Finding the Fourth Proportional to 36,210.69, 54,316.08 and 9,915.66

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Solution

The fourth proportional to 36,210.69, 54,316.08 and 9,915.66 is: 14,873.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,210.69 : 54,316.08 = 9,915.66 : x
  2. Step 2: Convert to fraction form
    36,210.69/54,316.08 = 9,915.66/x
  3. Step 3: Cross multiply
    36,210.69x = 54,316.08 × 9,915.66
  4. Step 4: Simplify right side
    36,210.69x = 538,579,781.81
  5. Step 5: Solve for x
    x = 538,579,781.81/36,210.69
  6. Step 6: Final answer
    x = 14,873.50

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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.