Home / 20,483.97-28,261.75-12,518.03

Finding the Fourth Proportional to 20,483.97, 28,261.75 and 12,518.03

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Solution

The fourth proportional to 20,483.97, 28,261.75 and 12,518.03 is: 17,271.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,483.97 : 28,261.75 = 12,518.03 : x
  2. Step 2: Convert to fraction form
    20,483.97/28,261.75 = 12,518.03/x
  3. Step 3: Cross multiply
    20,483.97x = 28,261.75 × 12,518.03
  4. Step 4: Simplify right side
    20,483.97x = 353,781,434.35
  5. Step 5: Solve for x
    x = 353,781,434.35/20,483.97
  6. Step 6: Final answer
    x = 17,271.14

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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.