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Finding the Fourth Proportional to 12,497.70, 18,746.55 and 12,303.30

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Solution

The fourth proportional to 12,497.70, 18,746.55 and 12,303.30 is: 18,454.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,497.70 : 18,746.55 = 12,303.30 : x
  2. Step 2: Convert to fraction form
    12,497.70/18,746.55 = 12,303.30/x
  3. Step 3: Cross multiply
    12,497.70x = 18,746.55 × 12,303.30
  4. Step 4: Simplify right side
    12,497.70x = 230,644,428.62
  5. Step 5: Solve for x
    x = 230,644,428.62/12,497.70
  6. Step 6: Final answer
    x = 18,454.95

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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.