Home / 9,720.28-13,413.96-5,528.52

Finding the Fourth Proportional to 9,720.28, 13,413.96 and 5,528.52

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Solution

The fourth proportional to 9,720.28, 13,413.96 and 5,528.52 is: 7,629.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,720.28 : 13,413.96 = 5,528.52 : x
  2. Step 2: Convert to fraction form
    9,720.28/13,413.96 = 5,528.52/x
  3. Step 3: Cross multiply
    9,720.28x = 13,413.96 × 5,528.52
  4. Step 4: Simplify right side
    9,720.28x = 74,159,346.14
  5. Step 5: Solve for x
    x = 74,159,346.14/9,720.28
  6. Step 6: Final answer
    x = 7,629.34

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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.