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Finding the Fourth Proportional to 10,448.19, 15,672.39 and 8,365.48

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Solution

The fourth proportional to 10,448.19, 15,672.39 and 8,365.48 is: 12,548.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,448.19 : 15,672.39 = 8,365.48 : x
  2. Step 2: Convert to fraction form
    10,448.19/15,672.39 = 8,365.48/x
  3. Step 3: Cross multiply
    10,448.19x = 15,672.39 × 8,365.48
  4. Step 4: Simplify right side
    10,448.19x = 131,106,994.55
  5. Step 5: Solve for x
    x = 131,106,994.55/10,448.19
  6. Step 6: Final answer
    x = 12,548.30

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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.