Home / 12,225.10-18,374.10-10,621.30

Finding the Fourth Proportional to 12,225.10, 18,374.10 and 10,621.30

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Solution

The fourth proportional to 12,225.10, 18,374.10 and 10,621.30 is: 15,963.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225.10 : 18,374.10 = 10,621.30 : x
  2. Step 2: Convert to fraction form
    12,225.10/18,374.10 = 10,621.30/x
  3. Step 3: Cross multiply
    12,225.10x = 18,374.10 × 10,621.30
  4. Step 4: Simplify right side
    12,225.10x = 195,156,828.33
  5. Step 5: Solve for x
    x = 195,156,828.33/12,225.10
  6. Step 6: Final answer
    x = 15,963.62

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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.