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Finding the Fourth Proportional to 9,958.60, 14,937.90 and 8,403.40

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Solution

The fourth proportional to 9,958.60, 14,937.90 and 8,403.40 is: 12,605.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,958.60 : 14,937.90 = 8,403.40 : x
  2. Step 2: Convert to fraction form
    9,958.60/14,937.90 = 8,403.40/x
  3. Step 3: Cross multiply
    9,958.60x = 14,937.90 × 8,403.40
  4. Step 4: Simplify right side
    9,958.60x = 125,529,148.86
  5. Step 5: Solve for x
    x = 125,529,148.86/9,958.60
  6. Step 6: Final answer
    x = 12,605.10

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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.