Home / 20,442.61-28,213.41-12,483.16

Finding the Fourth Proportional to 20,442.61, 28,213.41 and 12,483.16

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Solution

The fourth proportional to 20,442.61, 28,213.41 and 12,483.16 is: 17,228.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442.61 : 28,213.41 = 12,483.16 : x
  2. Step 2: Convert to fraction form
    20,442.61/28,213.41 = 12,483.16/x
  3. Step 3: Cross multiply
    20,442.61x = 28,213.41 × 12,483.16
  4. Step 4: Simplify right side
    20,442.61x = 352,192,511.18
  5. Step 5: Solve for x
    x = 352,192,511.18/20,442.61
  6. Step 6: Final answer
    x = 17,228.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.