Home / 9,721.84-13,415.88-5,530

Finding the Fourth Proportional to 9,721.84, 13,415.88 and 5,530

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Solution

The fourth proportional to 9,721.84, 13,415.88 and 5,530 is: 7,631.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,721.84 : 13,415.88 = 5,530 : x
  2. Step 2: Convert to fraction form
    9,721.84/13,415.88 = 5,530/x
  3. Step 3: Cross multiply
    9,721.84x = 13,415.88 × 5,530
  4. Step 4: Simplify right side
    9,721.84x = 74,189,816.40
  5. Step 5: Solve for x
    x = 74,189,816.40/9,721.84
  6. Step 6: Final answer
    x = 7,631.25

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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.