Home / 12,478.48-17,220.04-6,813.34

Finding the Fourth Proportional to 12,478.48, 17,220.04 and 6,813.34

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Solution

The fourth proportional to 12,478.48, 17,220.04 and 6,813.34 is: 9,402.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478.48 : 17,220.04 = 6,813.34 : x
  2. Step 2: Convert to fraction form
    12,478.48/17,220.04 = 6,813.34/x
  3. Step 3: Cross multiply
    12,478.48x = 17,220.04 × 6,813.34
  4. Step 4: Simplify right side
    12,478.48x = 117,325,987.33
  5. Step 5: Solve for x
    x = 117,325,987.33/12,478.48
  6. Step 6: Final answer
    x = 9,402.27

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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.