Home / 20,531.61-28,334.07-12,465.50

Finding the Fourth Proportional to 20,531.61, 28,334.07 and 12,465.50

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Solution

The fourth proportional to 20,531.61, 28,334.07 and 12,465.50 is: 17,202.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.61 : 28,334.07 = 12,465.50 : x
  2. Step 2: Convert to fraction form
    20,531.61/28,334.07 = 12,465.50/x
  3. Step 3: Cross multiply
    20,531.61x = 28,334.07 × 12,465.50
  4. Step 4: Simplify right side
    20,531.61x = 353,198,207.91
  5. Step 5: Solve for x
    x = 353,198,207.91/20,531.61
  6. Step 6: Final answer
    x = 17,202.66

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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.