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Finding the Fourth Proportional to 28,468.13, 42,700.10 and 8,745.48

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Solution

The fourth proportional to 28,468.13, 42,700.10 and 8,745.48 is: 13,117.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,468.13 : 42,700.10 = 8,745.48 : x
  2. Step 2: Convert to fraction form
    28,468.13/42,700.10 = 8,745.48/x
  3. Step 3: Cross multiply
    28,468.13x = 42,700.10 × 8,745.48
  4. Step 4: Simplify right side
    28,468.13x = 373,432,826.82
  5. Step 5: Solve for x
    x = 373,432,826.82/28,468.13
  6. Step 6: Final answer
    x = 13,117.58

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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.