Home / 9,720.30-13,414.02-5,528.54

Finding the Fourth Proportional to 9,720.30, 13,414.02 and 5,528.54

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Solution

The fourth proportional to 9,720.30, 13,414.02 and 5,528.54 is: 7,629.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,720.30 : 13,414.02 = 5,528.54 : x
  2. Step 2: Convert to fraction form
    9,720.30/13,414.02 = 5,528.54/x
  3. Step 3: Cross multiply
    9,720.30x = 13,414.02 × 5,528.54
  4. Step 4: Simplify right side
    9,720.30x = 74,159,946.13
  5. Step 5: Solve for x
    x = 74,159,946.13/9,720.30
  6. Step 6: Final answer
    x = 7,629.39

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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.