Home / 12,820.10-19,232.13-5,424.60

Finding the Fourth Proportional to 12,820.10, 19,232.13 and 5,424.60

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Solution

The fourth proportional to 12,820.10, 19,232.13 and 5,424.60 is: 8,137.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,820.10 : 19,232.13 = 5,424.60 : x
  2. Step 2: Convert to fraction form
    12,820.10/19,232.13 = 5,424.60/x
  3. Step 3: Cross multiply
    12,820.10x = 19,232.13 × 5,424.60
  4. Step 4: Simplify right side
    12,820.10x = 104,326,612.40
  5. Step 5: Solve for x
    x = 104,326,612.40/12,820.10
  6. Step 6: Final answer
    x = 8,137.74

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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.