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Finding the Fourth Proportional to 12,677.98, 18,989.88 and 10,295.32

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Solution

The fourth proportional to 12,677.98, 18,989.88 and 10,295.32 is: 15,420.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,677.98 : 18,989.88 = 10,295.32 : x
  2. Step 2: Convert to fraction form
    12,677.98/18,989.88 = 10,295.32/x
  3. Step 3: Cross multiply
    12,677.98x = 18,989.88 × 10,295.32
  4. Step 4: Simplify right side
    12,677.98x = 195,506,891.36
  5. Step 5: Solve for x
    x = 195,506,891.36/12,677.98
  6. Step 6: Final answer
    x = 15,420.98

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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.