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Finding the Fourth Proportional to 28,395, 42,603.84 and 10,866.60

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Solution

The fourth proportional to 28,395, 42,603.84 and 10,866.60 is: 16,304.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,395 : 42,603.84 = 10,866.60 : x
  2. Step 2: Convert to fraction form
    28,395/42,603.84 = 10,866.60/x
  3. Step 3: Cross multiply
    28,395x = 42,603.84 × 10,866.60
  4. Step 4: Simplify right side
    28,395x = 462,958,887.74
  5. Step 5: Solve for x
    x = 462,958,887.74/28,395
  6. Step 6: Final answer
    x = 16,304.24

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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.