Home / 9,940.81-13,718.28-5,403.53

Finding the Fourth Proportional to 9,940.81, 13,718.28 and 5,403.53

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Solution

The fourth proportional to 9,940.81, 13,718.28 and 5,403.53 is: 7,456.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,940.81 : 13,718.28 = 5,403.53 : x
  2. Step 2: Convert to fraction form
    9,940.81/13,718.28 = 5,403.53/x
  3. Step 3: Cross multiply
    9,940.81x = 13,718.28 × 5,403.53
  4. Step 4: Simplify right side
    9,940.81x = 74,127,188.00
  5. Step 5: Solve for x
    x = 74,127,188.00/9,940.81
  6. Step 6: Final answer
    x = 7,456.85

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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.