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Finding the Fourth Proportional to 18,447.40, 24,981.75 and 18,447.40

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Solution

The fourth proportional to 18,447.40, 24,981.75 and 18,447.40 is: 24,981.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,447.40 : 24,981.75 = 18,447.40 : x
  2. Step 2: Convert to fraction form
    18,447.40/24,981.75 = 18,447.40/x
  3. Step 3: Cross multiply
    18,447.40x = 24,981.75 × 18,447.40
  4. Step 4: Simplify right side
    18,447.40x = 460,848,334.95
  5. Step 5: Solve for x
    x = 460,848,334.95/18,447.40
  6. Step 6: Final answer
    x = 24,981.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.