Home / 9,991.35-14,987.30-4,728.85

Finding the Fourth Proportional to 9,991.35, 14,987.30 and 4,728.85

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Solution

The fourth proportional to 9,991.35, 14,987.30 and 4,728.85 is: 7,093.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,991.35 : 14,987.30 = 4,728.85 : x
  2. Step 2: Convert to fraction form
    9,991.35/14,987.30 = 4,728.85/x
  3. Step 3: Cross multiply
    9,991.35x = 14,987.30 × 4,728.85
  4. Step 4: Simplify right side
    9,991.35x = 70,872,632.49
  5. Step 5: Solve for x
    x = 70,872,632.49/9,991.35
  6. Step 6: Final answer
    x = 7,093.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.