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Finding the Fourth Proportional to 28,466.40, 42,700.11 and 8,745.13

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Solution

The fourth proportional to 28,466.40, 42,700.11 and 8,745.13 is: 13,117.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,466.40 : 42,700.11 = 8,745.13 : x
  2. Step 2: Convert to fraction form
    28,466.40/42,700.11 = 8,745.13/x
  3. Step 3: Cross multiply
    28,466.40x = 42,700.11 × 8,745.13
  4. Step 4: Simplify right side
    28,466.40x = 373,418,033.55
  5. Step 5: Solve for x
    x = 373,418,033.55/28,466.40
  6. Step 6: Final answer
    x = 13,117.85

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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.