Home / 25,788.20-38,682.30-12,666.20

Finding the Fourth Proportional to 25,788.20, 38,682.30 and 12,666.20

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Solution

The fourth proportional to 25,788.20, 38,682.30 and 12,666.20 is: 18,999.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,788.20 : 38,682.30 = 12,666.20 : x
  2. Step 2: Convert to fraction form
    25,788.20/38,682.30 = 12,666.20/x
  3. Step 3: Cross multiply
    25,788.20x = 38,682.30 × 12,666.20
  4. Step 4: Simplify right side
    25,788.20x = 489,957,748.26
  5. Step 5: Solve for x
    x = 489,957,748.26/25,788.20
  6. Step 6: Final answer
    x = 18,999.30

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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.