Home / 21,207.36-31,806.64-8,055.12

Finding the Fourth Proportional to 21,207.36, 31,806.64 and 8,055.12

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Solution

The fourth proportional to 21,207.36, 31,806.64 and 8,055.12 is: 12,081.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,207.36 : 31,806.64 = 8,055.12 : x
  2. Step 2: Convert to fraction form
    21,207.36/31,806.64 = 8,055.12/x
  3. Step 3: Cross multiply
    21,207.36x = 31,806.64 × 8,055.12
  4. Step 4: Simplify right side
    21,207.36x = 256,206,302.00
  5. Step 5: Solve for x
    x = 256,206,302.00/21,207.36
  6. Step 6: Final answer
    x = 12,081.01

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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.