Home / 10,678.96-14,739.60-6,490.72

Finding the Fourth Proportional to 10,678.96, 14,739.60 and 6,490.72

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Solution

The fourth proportional to 10,678.96, 14,739.60 and 6,490.72 is: 8,958.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,678.96 : 14,739.60 = 6,490.72 : x
  2. Step 2: Convert to fraction form
    10,678.96/14,739.60 = 6,490.72/x
  3. Step 3: Cross multiply
    10,678.96x = 14,739.60 × 6,490.72
  4. Step 4: Simplify right side
    10,678.96x = 95,670,616.51
  5. Step 5: Solve for x
    x = 95,670,616.51/10,678.96
  6. Step 6: Final answer
    x = 8,958.80

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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.