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Finding the Fourth Proportional to 25,980.55, 38,981.11 and 13,508.44

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Solution

The fourth proportional to 25,980.55, 38,981.11 and 13,508.44 is: 20,268.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,980.55 : 38,981.11 = 13,508.44 : x
  2. Step 2: Convert to fraction form
    25,980.55/38,981.11 = 13,508.44/x
  3. Step 3: Cross multiply
    25,980.55x = 38,981.11 × 13,508.44
  4. Step 4: Simplify right side
    25,980.55x = 526,573,985.57
  5. Step 5: Solve for x
    x = 526,573,985.57/25,980.55
  6. Step 6: Final answer
    x = 20,268.01

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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.