Home / 28,325.28-42,487.82-8,603.81

Finding the Fourth Proportional to 28,325.28, 42,487.82 and 8,603.81

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Solution

The fourth proportional to 28,325.28, 42,487.82 and 8,603.81 is: 12,905.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,325.28 : 42,487.82 = 8,603.81 : x
  2. Step 2: Convert to fraction form
    28,325.28/42,487.82 = 8,603.81/x
  3. Step 3: Cross multiply
    28,325.28x = 42,487.82 × 8,603.81
  4. Step 4: Simplify right side
    28,325.28x = 365,557,130.59
  5. Step 5: Solve for x
    x = 365,557,130.59/28,325.28
  6. Step 6: Final answer
    x = 12,905.68

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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.