Home / 21,798.16-30,081.48-11,862.16

Finding the Fourth Proportional to 21,798.16, 30,081.48 and 11,862.16

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Solution

The fourth proportional to 21,798.16, 30,081.48 and 11,862.16 is: 16,369.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,798.16 : 30,081.48 = 11,862.16 : x
  2. Step 2: Convert to fraction form
    21,798.16/30,081.48 = 11,862.16/x
  3. Step 3: Cross multiply
    21,798.16x = 30,081.48 × 11,862.16
  4. Step 4: Simplify right side
    21,798.16x = 356,831,328.80
  5. Step 5: Solve for x
    x = 356,831,328.80/21,798.16
  6. Step 6: Final answer
    x = 16,369.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.