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Finding the Fourth Proportional to 10,770.94, 14,853.86 and 6,990.06

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Solution

The fourth proportional to 10,770.94, 14,853.86 and 6,990.06 is: 9,639.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,770.94 : 14,853.86 = 6,990.06 : x
  2. Step 2: Convert to fraction form
    10,770.94/14,853.86 = 6,990.06/x
  3. Step 3: Cross multiply
    10,770.94x = 14,853.86 × 6,990.06
  4. Step 4: Simplify right side
    10,770.94x = 103,829,372.63
  5. Step 5: Solve for x
    x = 103,829,372.63/10,770.94
  6. Step 6: Final answer
    x = 9,639.77

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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.