Home / 28,558.39-42,846.34-12,776.70

Finding the Fourth Proportional to 28,558.39, 42,846.34 and 12,776.70

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Solution

The fourth proportional to 28,558.39, 42,846.34 and 12,776.70 is: 19,168.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,558.39 : 42,846.34 = 12,776.70 : x
  2. Step 2: Convert to fraction form
    28,558.39/42,846.34 = 12,776.70/x
  3. Step 3: Cross multiply
    28,558.39x = 42,846.34 × 12,776.70
  4. Step 4: Simplify right side
    28,558.39x = 547,434,800.34
  5. Step 5: Solve for x
    x = 547,434,800.34/28,558.39
  6. Step 6: Final answer
    x = 19,168.97

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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.