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Finding the Fourth Proportional to 15,390.64, 23,069.48 and 10,994.77

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Solution

The fourth proportional to 15,390.64, 23,069.48 and 10,994.77 is: 16,480.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,390.64 : 23,069.48 = 10,994.77 : x
  2. Step 2: Convert to fraction form
    15,390.64/23,069.48 = 10,994.77/x
  3. Step 3: Cross multiply
    15,390.64x = 23,069.48 × 10,994.77
  4. Step 4: Simplify right side
    15,390.64x = 253,643,511.27
  5. Step 5: Solve for x
    x = 253,643,511.27/15,390.64
  6. Step 6: Final answer
    x = 16,480.38

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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.