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Finding the Fourth Proportional to 12,573.63, 18,830.88 and 7,383.15

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Solution

The fourth proportional to 12,573.63, 18,830.88 and 7,383.15 is: 11,057.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,573.63 : 18,830.88 = 7,383.15 : x
  2. Step 2: Convert to fraction form
    12,573.63/18,830.88 = 7,383.15/x
  3. Step 3: Cross multiply
    12,573.63x = 18,830.88 × 7,383.15
  4. Step 4: Simplify right side
    12,573.63x = 139,031,211.67
  5. Step 5: Solve for x
    x = 139,031,211.67/12,573.63
  6. Step 6: Final answer
    x = 11,057.36

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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.