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Finding the Fourth Proportional to 12,625.78, 18,925.53 and 7,070.98

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Solution

The fourth proportional to 12,625.78, 18,925.53 and 7,070.98 is: 10,599.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,625.78 : 18,925.53 = 7,070.98 : x
  2. Step 2: Convert to fraction form
    12,625.78/18,925.53 = 7,070.98/x
  3. Step 3: Cross multiply
    12,625.78x = 18,925.53 × 7,070.98
  4. Step 4: Simplify right side
    12,625.78x = 133,822,044.12
  5. Step 5: Solve for x
    x = 133,822,044.12/12,625.78
  6. Step 6: Final answer
    x = 10,599.11

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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.