Home / 21,303.68-31,955.36-6,512.54

Finding the Fourth Proportional to 21,303.68, 31,955.36 and 6,512.54

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Solution

The fourth proportional to 21,303.68, 31,955.36 and 6,512.54 is: 9,768.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303.68 : 31,955.36 = 6,512.54 : x
  2. Step 2: Convert to fraction form
    21,303.68/31,955.36 = 6,512.54/x
  3. Step 3: Cross multiply
    21,303.68x = 31,955.36 × 6,512.54
  4. Step 4: Simplify right side
    21,303.68x = 208,110,367.87
  5. Step 5: Solve for x
    x = 208,110,367.87/21,303.68
  6. Step 6: Final answer
    x = 9,768.75

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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.