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Finding the Fourth Proportional to 12,224.58, 16,870.76 and 6,919.40

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Solution

The fourth proportional to 12,224.58, 16,870.76 and 6,919.40 is: 9,549.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,224.58 : 16,870.76 = 6,919.40 : x
  2. Step 2: Convert to fraction form
    12,224.58/16,870.76 = 6,919.40/x
  3. Step 3: Cross multiply
    12,224.58x = 16,870.76 × 6,919.40
  4. Step 4: Simplify right side
    12,224.58x = 116,735,536.74
  5. Step 5: Solve for x
    x = 116,735,536.74/12,224.58
  6. Step 6: Final answer
    x = 9,549.25

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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.