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Finding the Fourth Proportional to 10,935, 15,084.90 and 6,899.94

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Solution

The fourth proportional to 10,935, 15,084.90 and 6,899.94 is: 9,518.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,935 : 15,084.90 = 6,899.94 : x
  2. Step 2: Convert to fraction form
    10,935/15,084.90 = 6,899.94/x
  3. Step 3: Cross multiply
    10,935x = 15,084.90 × 6,899.94
  4. Step 4: Simplify right side
    10,935x = 104,084,904.91
  5. Step 5: Solve for x
    x = 104,084,904.91/10,935
  6. Step 6: Final answer
    x = 9,518.51

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1.5x scale

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.