Home / 13,944.93-19,244.61-7,978.47

Finding the Fourth Proportional to 13,944.93, 19,244.61 and 7,978.47

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Solution

The fourth proportional to 13,944.93, 19,244.61 and 7,978.47 is: 11,010.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,944.93 : 19,244.61 = 7,978.47 : x
  2. Step 2: Convert to fraction form
    13,944.93/19,244.61 = 7,978.47/x
  3. Step 3: Cross multiply
    13,944.93x = 19,244.61 × 7,978.47
  4. Step 4: Simplify right side
    13,944.93x = 153,542,543.55
  5. Step 5: Solve for x
    x = 153,542,543.55/13,944.93
  6. Step 6: Final answer
    x = 11,010.64

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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.