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Finding the Fourth Proportional to 10,761.40, 16,109.70 and 9,465.40

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Solution

The fourth proportional to 10,761.40, 16,109.70 and 9,465.40 is: 14,169.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,761.40 : 16,109.70 = 9,465.40 : x
  2. Step 2: Convert to fraction form
    10,761.40/16,109.70 = 9,465.40/x
  3. Step 3: Cross multiply
    10,761.40x = 16,109.70 × 9,465.40
  4. Step 4: Simplify right side
    10,761.40x = 152,484,754.38
  5. Step 5: Solve for x
    x = 152,484,754.38/10,761.40
  6. Step 6: Final answer
    x = 14,169.60

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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.