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Finding the Fourth Proportional to 25,383.68, 38,075.68 and 6,915.84

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Solution

The fourth proportional to 25,383.68, 38,075.68 and 6,915.84 is: 10,373.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,383.68 : 38,075.68 = 6,915.84 : x
  2. Step 2: Convert to fraction form
    25,383.68/38,075.68 = 6,915.84/x
  3. Step 3: Cross multiply
    25,383.68x = 38,075.68 × 6,915.84
  4. Step 4: Simplify right side
    25,383.68x = 263,325,310.77
  5. Step 5: Solve for x
    x = 263,325,310.77/25,383.68
  6. Step 6: Final answer
    x = 10,373.80

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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.