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Finding the Fourth Proportional to 10,989.79, 16,507.01 and 9,702.74

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Solution

The fourth proportional to 10,989.79, 16,507.01 and 9,702.74 is: 14,573.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,989.79 : 16,507.01 = 9,702.74 : x
  2. Step 2: Convert to fraction form
    10,989.79/16,507.01 = 9,702.74/x
  3. Step 3: Cross multiply
    10,989.79x = 16,507.01 × 9,702.74
  4. Step 4: Simplify right side
    10,989.79x = 160,163,291.73
  5. Step 5: Solve for x
    x = 160,163,291.73/10,989.79
  6. Step 6: Final answer
    x = 14,573.83

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1.5x scale

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.