Home / 10,620.98-14,657.45-6,143.86

Finding the Fourth Proportional to 10,620.98, 14,657.45 and 6,143.86

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Solution

The fourth proportional to 10,620.98, 14,657.45 and 6,143.86 is: 8,478.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,620.98 : 14,657.45 = 6,143.86 : x
  2. Step 2: Convert to fraction form
    10,620.98/14,657.45 = 6,143.86/x
  3. Step 3: Cross multiply
    10,620.98x = 14,657.45 × 6,143.86
  4. Step 4: Simplify right side
    10,620.98x = 90,053,308.36
  5. Step 5: Solve for x
    x = 90,053,308.36/10,620.98
  6. Step 6: Final answer
    x = 8,478.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.