Home / 21,025.77-31,541.99-7,879.17

Finding the Fourth Proportional to 21,025.77, 31,541.99 and 7,879.17

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Solution

The fourth proportional to 21,025.77, 31,541.99 and 7,879.17 is: 11,820.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,025.77 : 31,541.99 = 7,879.17 : x
  2. Step 2: Convert to fraction form
    21,025.77/31,541.99 = 7,879.17/x
  3. Step 3: Cross multiply
    21,025.77x = 31,541.99 × 7,879.17
  4. Step 4: Simplify right side
    21,025.77x = 248,524,661.95
  5. Step 5: Solve for x
    x = 248,524,661.95/21,025.77
  6. Step 6: Final answer
    x = 11,820.00

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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.