Home / 21,256.21-31,886.12-6,465.25

Finding the Fourth Proportional to 21,256.21, 31,886.12 and 6,465.25

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Solution

The fourth proportional to 21,256.21, 31,886.12 and 6,465.25 is: 9,698.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,256.21 : 31,886.12 = 6,465.25 : x
  2. Step 2: Convert to fraction form
    21,256.21/31,886.12 = 6,465.25/x
  3. Step 3: Cross multiply
    21,256.21x = 31,886.12 × 6,465.25
  4. Step 4: Simplify right side
    21,256.21x = 206,151,737.33
  5. Step 5: Solve for x
    x = 206,151,737.33/21,256.21
  6. Step 6: Final answer
    x = 9,698.42

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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.