Home / 13,539.90-20,302.35-5,540.28

Finding the Fourth Proportional to 13,539.90, 20,302.35 and 5,540.28

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Solution

The fourth proportional to 13,539.90, 20,302.35 and 5,540.28 is: 8,307.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.90 : 20,302.35 = 5,540.28 : x
  2. Step 2: Convert to fraction form
    13,539.90/20,302.35 = 5,540.28/x
  3. Step 3: Cross multiply
    13,539.90x = 20,302.35 × 5,540.28
  4. Step 4: Simplify right side
    13,539.90x = 112,480,703.66
  5. Step 5: Solve for x
    x = 112,480,703.66/13,539.90
  6. Step 6: Final answer
    x = 8,307.35

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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.