Home / 12,420.40-18,625.65-4,098.10

Finding the Fourth Proportional to 12,420.40, 18,625.65 and 4,098.10

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Solution

The fourth proportional to 12,420.40, 18,625.65 and 4,098.10 is: 6,145.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420.40 : 18,625.65 = 4,098.10 : x
  2. Step 2: Convert to fraction form
    12,420.40/18,625.65 = 4,098.10/x
  3. Step 3: Cross multiply
    12,420.40x = 18,625.65 × 4,098.10
  4. Step 4: Simplify right side
    12,420.40x = 76,329,776.27
  5. Step 5: Solve for x
    x = 76,329,776.27/12,420.40
  6. Step 6: Final answer
    x = 6,145.52

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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.