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Finding the Fourth Proportional to 9,939.74, 14,909.62 and 4,670.89

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Solution

The fourth proportional to 9,939.74, 14,909.62 and 4,670.89 is: 7,006.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,939.74 : 14,909.62 = 4,670.89 : x
  2. Step 2: Convert to fraction form
    9,939.74/14,909.62 = 4,670.89/x
  3. Step 3: Cross multiply
    9,939.74x = 14,909.62 × 4,670.89
  4. Step 4: Simplify right side
    9,939.74x = 69,641,133.80
  5. Step 5: Solve for x
    x = 69,641,133.80/9,939.74
  6. Step 6: Final answer
    x = 7,006.33

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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.