Home / 21,261.81-31,886.99-6,466.76

Finding the Fourth Proportional to 21,261.81, 31,886.99 and 6,466.76

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Solution

The fourth proportional to 21,261.81, 31,886.99 and 6,466.76 is: 9,698.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261.81 : 31,886.99 = 6,466.76 : x
  2. Step 2: Convert to fraction form
    21,261.81/31,886.99 = 6,466.76/x
  3. Step 3: Cross multiply
    21,261.81x = 31,886.99 × 6,466.76
  4. Step 4: Simplify right side
    21,261.81x = 206,205,319.68
  5. Step 5: Solve for x
    x = 206,205,319.68/21,261.81
  6. Step 6: Final answer
    x = 9,698.39

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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.