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Finding the Fourth Proportional to 28,603.40, 42,905.10 and 8,883.95

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Solution

The fourth proportional to 28,603.40, 42,905.10 and 8,883.95 is: 13,325.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,603.40 : 42,905.10 = 8,883.95 : x
  2. Step 2: Convert to fraction form
    28,603.40/42,905.10 = 8,883.95/x
  3. Step 3: Cross multiply
    28,603.40x = 42,905.10 × 8,883.95
  4. Step 4: Simplify right side
    28,603.40x = 381,166,763.15
  5. Step 5: Solve for x
    x = 381,166,763.15/28,603.40
  6. Step 6: Final answer
    x = 13,325.93

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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.