Home / 9,855.14-13,599.52-5,378.00

Finding the Fourth Proportional to 9,855.14, 13,599.52 and 5,378.00

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Solution

The fourth proportional to 9,855.14, 13,599.52 and 5,378.00 is: 7,421.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,855.14 : 13,599.52 = 5,378.00 : x
  2. Step 2: Convert to fraction form
    9,855.14/13,599.52 = 5,378.00/x
  3. Step 3: Cross multiply
    9,855.14x = 13,599.52 × 5,378.00
  4. Step 4: Simplify right side
    9,855.14x = 73,138,152.24
  5. Step 5: Solve for x
    x = 73,138,152.24/9,855.14
  6. Step 6: Final answer
    x = 7,421.32

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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.