Home / 21,181.64-31,752.81-8,025.21

Finding the Fourth Proportional to 21,181.64, 31,752.81 and 8,025.21

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Solution

The fourth proportional to 21,181.64, 31,752.81 and 8,025.21 is: 12,030.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181.64 : 31,752.81 = 8,025.21 : x
  2. Step 2: Convert to fraction form
    21,181.64/31,752.81 = 8,025.21/x
  3. Step 3: Cross multiply
    21,181.64x = 31,752.81 × 8,025.21
  4. Step 4: Simplify right side
    21,181.64x = 254,822,968.34
  5. Step 5: Solve for x
    x = 254,822,968.34/21,181.64
  6. Step 6: Final answer
    x = 12,030.37

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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.