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Finding the Fourth Proportional to 8,915.48, 13,374.54 and 8,368.76

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Solution

The fourth proportional to 8,915.48, 13,374.54 and 8,368.76 is: 12,554.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.48 : 13,374.54 = 8,368.76 : x
  2. Step 2: Convert to fraction form
    8,915.48/13,374.54 = 8,368.76/x
  3. Step 3: Cross multiply
    8,915.48x = 13,374.54 × 8,368.76
  4. Step 4: Simplify right side
    8,915.48x = 111,928,315.37
  5. Step 5: Solve for x
    x = 111,928,315.37/8,915.48
  6. Step 6: Final answer
    x = 12,554.38

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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.