Home / 12,225.20-16,870.59-6,636.20

Finding the Fourth Proportional to 12,225.20, 16,870.59 and 6,636.20

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Solution

The fourth proportional to 12,225.20, 16,870.59 and 6,636.20 is: 9,157.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225.20 : 16,870.59 = 6,636.20 : x
  2. Step 2: Convert to fraction form
    12,225.20/16,870.59 = 6,636.20/x
  3. Step 3: Cross multiply
    12,225.20x = 16,870.59 × 6,636.20
  4. Step 4: Simplify right side
    12,225.20x = 111,956,525.01
  5. Step 5: Solve for x
    x = 111,956,525.01/12,225.20
  6. Step 6: Final answer
    x = 9,157.85

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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.