Home / 28,213.32-42,320.34-12,627.72

Finding the Fourth Proportional to 28,213.32, 42,320.34 and 12,627.72

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Solution

The fourth proportional to 28,213.32, 42,320.34 and 12,627.72 is: 18,941.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,213.32 : 42,320.34 = 12,627.72 : x
  2. Step 2: Convert to fraction form
    28,213.32/42,320.34 = 12,627.72/x
  3. Step 3: Cross multiply
    28,213.32x = 42,320.34 × 12,627.72
  4. Step 4: Simplify right side
    28,213.32x = 534,409,403.82
  5. Step 5: Solve for x
    x = 534,409,403.82/28,213.32
  6. Step 6: Final answer
    x = 18,941.74

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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.