Home / 9,870.36-13,620.68-5,393.90

Finding the Fourth Proportional to 9,870.36, 13,620.68 and 5,393.90

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Solution

The fourth proportional to 9,870.36, 13,620.68 and 5,393.90 is: 7,443.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,870.36 : 13,620.68 = 5,393.90 : x
  2. Step 2: Convert to fraction form
    9,870.36/13,620.68 = 5,393.90/x
  3. Step 3: Cross multiply
    9,870.36x = 13,620.68 × 5,393.90
  4. Step 4: Simplify right side
    9,870.36x = 73,468,585.85
  5. Step 5: Solve for x
    x = 73,468,585.85/9,870.36
  6. Step 6: Final answer
    x = 7,443.35

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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.