Home / 9,980.96-13,776.89-6,444.09

Finding the Fourth Proportional to 9,980.96, 13,776.89 and 6,444.09

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Solution

The fourth proportional to 9,980.96, 13,776.89 and 6,444.09 is: 8,894.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,980.96 : 13,776.89 = 6,444.09 : x
  2. Step 2: Convert to fraction form
    9,980.96/13,776.89 = 6,444.09/x
  3. Step 3: Cross multiply
    9,980.96x = 13,776.89 × 6,444.09
  4. Step 4: Simplify right side
    9,980.96x = 88,779,486.86
  5. Step 5: Solve for x
    x = 88,779,486.86/9,980.96
  6. Step 6: Final answer
    x = 8,894.89

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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.