Home / 27,718.08-41,541.12-21,120

Finding the Fourth Proportional to 27,718.08, 41,541.12 and 21,120

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Solution

The fourth proportional to 27,718.08, 41,541.12 and 21,120 is: 31,652.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,718.08 : 41,541.12 = 21,120 : x
  2. Step 2: Convert to fraction form
    27,718.08/41,541.12 = 21,120/x
  3. Step 3: Cross multiply
    27,718.08x = 41,541.12 × 21,120
  4. Step 4: Simplify right side
    27,718.08x = 877,348,454.40
  5. Step 5: Solve for x
    x = 877,348,454.40/27,718.08
  6. Step 6: Final answer
    x = 31,652.57

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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.