Home / 21,030.56-31,550.84-6,239.60

Finding the Fourth Proportional to 21,030.56, 31,550.84 and 6,239.60

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Solution

The fourth proportional to 21,030.56, 31,550.84 and 6,239.60 is: 9,360.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030.56 : 31,550.84 = 6,239.60 : x
  2. Step 2: Convert to fraction form
    21,030.56/31,550.84 = 6,239.60/x
  3. Step 3: Cross multiply
    21,030.56x = 31,550.84 × 6,239.60
  4. Step 4: Simplify right side
    21,030.56x = 196,864,621.26
  5. Step 5: Solve for x
    x = 196,864,621.26/21,030.56
  6. Step 6: Final answer
    x = 9,360.88

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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.