Home / 21,680.64-32,332.86-19,581.12

Finding the Fourth Proportional to 21,680.64, 32,332.86 and 19,581.12

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Solution

The fourth proportional to 21,680.64, 32,332.86 and 19,581.12 is: 29,201.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,680.64 : 32,332.86 = 19,581.12 : x
  2. Step 2: Convert to fraction form
    21,680.64/32,332.86 = 19,581.12/x
  3. Step 3: Cross multiply
    21,680.64x = 32,332.86 × 19,581.12
  4. Step 4: Simplify right side
    21,680.64x = 633,113,611.60
  5. Step 5: Solve for x
    x = 633,113,611.60/21,680.64
  6. Step 6: Final answer
    x = 29,201.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.