Home / 12,209.72-18,315.29-4,713.32

Finding the Fourth Proportional to 12,209.72, 18,315.29 and 4,713.32

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Solution

The fourth proportional to 12,209.72, 18,315.29 and 4,713.32 is: 7,070.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.72 : 18,315.29 = 4,713.32 : x
  2. Step 2: Convert to fraction form
    12,209.72/18,315.29 = 4,713.32/x
  3. Step 3: Cross multiply
    12,209.72x = 18,315.29 × 4,713.32
  4. Step 4: Simplify right side
    12,209.72x = 86,325,810.88
  5. Step 5: Solve for x
    x = 86,325,810.88/12,209.72
  6. Step 6: Final answer
    x = 7,070.25

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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.