Home / 21,973.88-30,319.34-12,542.20

Finding the Fourth Proportional to 21,973.88, 30,319.34 and 12,542.20

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Solution

The fourth proportional to 21,973.88, 30,319.34 and 12,542.20 is: 17,305.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,973.88 : 30,319.34 = 12,542.20 : x
  2. Step 2: Convert to fraction form
    21,973.88/30,319.34 = 12,542.20/x
  3. Step 3: Cross multiply
    21,973.88x = 30,319.34 × 12,542.20
  4. Step 4: Simplify right side
    21,973.88x = 380,271,226.15
  5. Step 5: Solve for x
    x = 380,271,226.15/21,973.88
  6. Step 6: Final answer
    x = 17,305.60

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Double scale
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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.