Home / 20,946.88-28,895.16-13,276.12

Finding the Fourth Proportional to 20,946.88, 28,895.16 and 13,276.12

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Solution

The fourth proportional to 20,946.88, 28,895.16 and 13,276.12 is: 18,313.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.88 : 28,895.16 = 13,276.12 : x
  2. Step 2: Convert to fraction form
    20,946.88/28,895.16 = 13,276.12/x
  3. Step 3: Cross multiply
    20,946.88x = 28,895.16 × 13,276.12
  4. Step 4: Simplify right side
    20,946.88x = 383,615,611.58
  5. Step 5: Solve for x
    x = 383,615,611.58/20,946.88
  6. Step 6: Final answer
    x = 18,313.74

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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.