Home / 9,975.60-14,951.40-4,129.20

Finding the Fourth Proportional to 9,975.60, 14,951.40 and 4,129.20

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Solution

The fourth proportional to 9,975.60, 14,951.40 and 4,129.20 is: 6,188.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,975.60 : 14,951.40 = 4,129.20 : x
  2. Step 2: Convert to fraction form
    9,975.60/14,951.40 = 4,129.20/x
  3. Step 3: Cross multiply
    9,975.60x = 14,951.40 × 4,129.20
  4. Step 4: Simplify right side
    9,975.60x = 61,737,320.88
  5. Step 5: Solve for x
    x = 61,737,320.88/9,975.60
  6. Step 6: Final answer
    x = 6,188.83

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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.