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Finding the Fourth Proportional to 12,642.02, 18,963.02 and 4,322.10

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Solution

The fourth proportional to 12,642.02, 18,963.02 and 4,322.10 is: 6,483.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642.02 : 18,963.02 = 4,322.10 : x
  2. Step 2: Convert to fraction form
    12,642.02/18,963.02 = 4,322.10/x
  3. Step 3: Cross multiply
    12,642.02x = 18,963.02 × 4,322.10
  4. Step 4: Simplify right side
    12,642.02x = 81,960,068.74
  5. Step 5: Solve for x
    x = 81,960,068.74/12,642.02
  6. Step 6: Final answer
    x = 6,483.15

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Similar ratio
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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.