Home / 21,156.58-31,734.60-6,364.90

Finding the Fourth Proportional to 21,156.58, 31,734.60 and 6,364.90

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Solution

The fourth proportional to 21,156.58, 31,734.60 and 6,364.90 is: 9,547.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,156.58 : 31,734.60 = 6,364.90 : x
  2. Step 2: Convert to fraction form
    21,156.58/31,734.60 = 6,364.90/x
  3. Step 3: Cross multiply
    21,156.58x = 31,734.60 × 6,364.90
  4. Step 4: Simplify right side
    21,156.58x = 201,987,555.54
  5. Step 5: Solve for x
    x = 201,987,555.54/21,156.58
  6. Step 6: Final answer
    x = 9,547.27

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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.