Home / 21,961.36-30,312.36-13,466.32

Finding the Fourth Proportional to 21,961.36, 30,312.36 and 13,466.32

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Solution

The fourth proportional to 21,961.36, 30,312.36 and 13,466.32 is: 18,587.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,961.36 : 30,312.36 = 13,466.32 : x
  2. Step 2: Convert to fraction form
    21,961.36/30,312.36 = 13,466.32/x
  3. Step 3: Cross multiply
    21,961.36x = 30,312.36 × 13,466.32
  4. Step 4: Simplify right side
    21,961.36x = 408,195,939.72
  5. Step 5: Solve for x
    x = 408,195,939.72/21,961.36
  6. Step 6: Final answer
    x = 18,587.01

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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.