Home / 17,086.90-25,630.35-12,421.30

Finding the Fourth Proportional to 17,086.90, 25,630.35 and 12,421.30

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Solution

The fourth proportional to 17,086.90, 25,630.35 and 12,421.30 is: 18,631.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,086.90 : 25,630.35 = 12,421.30 : x
  2. Step 2: Convert to fraction form
    17,086.90/25,630.35 = 12,421.30/x
  3. Step 3: Cross multiply
    17,086.90x = 25,630.35 × 12,421.30
  4. Step 4: Simplify right side
    17,086.90x = 318,362,266.46
  5. Step 5: Solve for x
    x = 318,362,266.46/17,086.90
  6. Step 6: Final answer
    x = 18,631.95

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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.