Home / 21,085.44-31,630.08-8,602.56

Finding the Fourth Proportional to 21,085.44, 31,630.08 and 8,602.56

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Solution

The fourth proportional to 21,085.44, 31,630.08 and 8,602.56 is: 12,904.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,085.44 : 31,630.08 = 8,602.56 : x
  2. Step 2: Convert to fraction form
    21,085.44/31,630.08 = 8,602.56/x
  3. Step 3: Cross multiply
    21,085.44x = 31,630.08 × 8,602.56
  4. Step 4: Simplify right side
    21,085.44x = 272,099,661.00
  5. Step 5: Solve for x
    x = 272,099,661.00/21,085.44
  6. Step 6: Final answer
    x = 12,904.62

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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.