Home / 84,680.86-127,021.35-21,505.72

Finding the Fourth Proportional to 84,680.86, 127,021.35 and 21,505.72

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Solution

The fourth proportional to 84,680.86, 127,021.35 and 21,505.72 is: 32,258.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,680.86 : 127,021.35 = 21,505.72 : x
  2. Step 2: Convert to fraction form
    84,680.86/127,021.35 = 21,505.72/x
  3. Step 3: Cross multiply
    84,680.86x = 127,021.35 × 21,505.72
  4. Step 4: Simplify right side
    84,680.86x = 2,731,685,904.68
  5. Step 5: Solve for x
    x = 2,731,685,904.68/84,680.86
  6. Step 6: Final answer
    x = 32,258.60

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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.