Home / 15,447.68-21,317.60-8,374.08

Finding the Fourth Proportional to 15,447.68, 21,317.60 and 8,374.08

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Solution

The fourth proportional to 15,447.68, 21,317.60 and 8,374.08 is: 11,556.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.68 : 21,317.60 = 8,374.08 : x
  2. Step 2: Convert to fraction form
    15,447.68/21,317.60 = 8,374.08/x
  3. Step 3: Cross multiply
    15,447.68x = 21,317.60 × 8,374.08
  4. Step 4: Simplify right side
    15,447.68x = 178,515,287.81
  5. Step 5: Solve for x
    x = 178,515,287.81/15,447.68
  6. Step 6: Final answer
    x = 11,556.12

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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.