Home / 28,156.45-42,192.11-12,352.64

Finding the Fourth Proportional to 28,156.45, 42,192.11 and 12,352.64

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Solution

The fourth proportional to 28,156.45, 42,192.11 and 12,352.64 is: 18,510.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,156.45 : 42,192.11 = 12,352.64 : x
  2. Step 2: Convert to fraction form
    28,156.45/42,192.11 = 12,352.64/x
  3. Step 3: Cross multiply
    28,156.45x = 42,192.11 × 12,352.64
  4. Step 4: Simplify right side
    28,156.45x = 521,184,052.10
  5. Step 5: Solve for x
    x = 521,184,052.10/28,156.45
  6. Step 6: Final answer
    x = 18,510.29

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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.