Home / 13,112.88-19,673.64-5,319.60

Finding the Fourth Proportional to 13,112.88, 19,673.64 and 5,319.60

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Solution

The fourth proportional to 13,112.88, 19,673.64 and 5,319.60 is: 7,981.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.88 : 19,673.64 = 5,319.60 : x
  2. Step 2: Convert to fraction form
    13,112.88/19,673.64 = 5,319.60/x
  3. Step 3: Cross multiply
    13,112.88x = 19,673.64 × 5,319.60
  4. Step 4: Simplify right side
    13,112.88x = 104,655,895.34
  5. Step 5: Solve for x
    x = 104,655,895.34/13,112.88
  6. Step 6: Final answer
    x = 7,981.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.