Home / 20,522.96-28,319.64-12,567.44

Finding the Fourth Proportional to 20,522.96, 28,319.64 and 12,567.44

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Solution

The fourth proportional to 20,522.96, 28,319.64 and 12,567.44 is: 17,341.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,522.96 : 28,319.64 = 12,567.44 : x
  2. Step 2: Convert to fraction form
    20,522.96/28,319.64 = 12,567.44/x
  3. Step 3: Cross multiply
    20,522.96x = 28,319.64 × 12,567.44
  4. Step 4: Simplify right side
    20,522.96x = 355,905,376.52
  5. Step 5: Solve for x
    x = 355,905,376.52/20,522.96
  6. Step 6: Final answer
    x = 17,341.82

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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.