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Finding the Fourth Proportional to 25,483.60, 38,225.40 and 18,922.60

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Solution

The fourth proportional to 25,483.60, 38,225.40 and 18,922.60 is: 28,383.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,483.60 : 38,225.40 = 18,922.60 : x
  2. Step 2: Convert to fraction form
    25,483.60/38,225.40 = 18,922.60/x
  3. Step 3: Cross multiply
    25,483.60x = 38,225.40 × 18,922.60
  4. Step 4: Simplify right side
    25,483.60x = 723,323,954.04
  5. Step 5: Solve for x
    x = 723,323,954.04/25,483.60
  6. Step 6: Final answer
    x = 28,383.90

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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.