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Finding the Fourth Proportional to 25,384.60, 38,076.90 and 18,823.60

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Solution

The fourth proportional to 25,384.60, 38,076.90 and 18,823.60 is: 28,235.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,384.60 : 38,076.90 = 18,823.60 : x
  2. Step 2: Convert to fraction form
    25,384.60/38,076.90 = 18,823.60/x
  3. Step 3: Cross multiply
    25,384.60x = 38,076.90 × 18,823.60
  4. Step 4: Simplify right side
    25,384.60x = 716,744,334.84
  5. Step 5: Solve for x
    x = 716,744,334.84/25,384.60
  6. Step 6: Final answer
    x = 28,235.40

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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.