Home / 27,313.04-40,989-21,079.28

Finding the Fourth Proportional to 27,313.04, 40,989 and 21,079.28

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Solution

The fourth proportional to 27,313.04, 40,989 and 21,079.28 is: 31,633.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,313.04 : 40,989 = 21,079.28 : x
  2. Step 2: Convert to fraction form
    27,313.04/40,989 = 21,079.28/x
  3. Step 3: Cross multiply
    27,313.04x = 40,989 × 21,079.28
  4. Step 4: Simplify right side
    27,313.04x = 864,018,607.92
  5. Step 5: Solve for x
    x = 864,018,607.92/27,313.04
  6. Step 6: Final answer
    x = 31,633.92

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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.