Home / 18,943.40-28,415.10-8,410.95

Finding the Fourth Proportional to 18,943.40, 28,415.10 and 8,410.95

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Solution

The fourth proportional to 18,943.40, 28,415.10 and 8,410.95 is: 12,616.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,943.40 : 28,415.10 = 8,410.95 : x
  2. Step 2: Convert to fraction form
    18,943.40/28,415.10 = 8,410.95/x
  3. Step 3: Cross multiply
    18,943.40x = 28,415.10 × 8,410.95
  4. Step 4: Simplify right side
    18,943.40x = 238,997,985.35
  5. Step 5: Solve for x
    x = 238,997,985.35/18,943.40
  6. Step 6: Final answer
    x = 12,616.43

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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.