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Finding the Fourth Proportional to 10,892.64, 15,035.04 and 6,916.80

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Solution

The fourth proportional to 10,892.64, 15,035.04 and 6,916.80 is: 9,547.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,892.64 : 15,035.04 = 6,916.80 : x
  2. Step 2: Convert to fraction form
    10,892.64/15,035.04 = 6,916.80/x
  3. Step 3: Cross multiply
    10,892.64x = 15,035.04 × 6,916.80
  4. Step 4: Simplify right side
    10,892.64x = 103,994,364.67
  5. Step 5: Solve for x
    x = 103,994,364.67/10,892.64
  6. Step 6: Final answer
    x = 9,547.21

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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.