Home / 9,620.20-13,274.16-5,428.45

Finding the Fourth Proportional to 9,620.20, 13,274.16 and 5,428.45

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Solution

The fourth proportional to 9,620.20, 13,274.16 and 5,428.45 is: 7,490.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,620.20 : 13,274.16 = 5,428.45 : x
  2. Step 2: Convert to fraction form
    9,620.20/13,274.16 = 5,428.45/x
  3. Step 3: Cross multiply
    9,620.20x = 13,274.16 × 5,428.45
  4. Step 4: Simplify right side
    9,620.20x = 72,058,113.85
  5. Step 5: Solve for x
    x = 72,058,113.85/9,620.20
  6. Step 6: Final answer
    x = 7,490.29

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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.