Home / 21,085.92-31,628.88-5,503.56

Finding the Fourth Proportional to 21,085.92, 31,628.88 and 5,503.56

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Solution

The fourth proportional to 21,085.92, 31,628.88 and 5,503.56 is: 8,255.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,085.92 : 31,628.88 = 5,503.56 : x
  2. Step 2: Convert to fraction form
    21,085.92/31,628.88 = 5,503.56/x
  3. Step 3: Cross multiply
    21,085.92x = 31,628.88 × 5,503.56
  4. Step 4: Simplify right side
    21,085.92x = 174,071,438.81
  5. Step 5: Solve for x
    x = 174,071,438.81/21,085.92
  6. Step 6: Final answer
    x = 8,255.34

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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.