Home / 12,580.48-17,360.64-6,991.36

Finding the Fourth Proportional to 12,580.48, 17,360.64 and 6,991.36

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Solution

The fourth proportional to 12,580.48, 17,360.64 and 6,991.36 is: 9,647.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,580.48 : 17,360.64 = 6,991.36 : x
  2. Step 2: Convert to fraction form
    12,580.48/17,360.64 = 6,991.36/x
  3. Step 3: Cross multiply
    12,580.48x = 17,360.64 × 6,991.36
  4. Step 4: Simplify right side
    12,580.48x = 121,374,484.07
  5. Step 5: Solve for x
    x = 121,374,484.07/12,580.48
  6. Step 6: Final answer
    x = 9,647.84

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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.