Home / 12,886.20-19,313.70-5,475.10

Finding the Fourth Proportional to 12,886.20, 19,313.70 and 5,475.10

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Solution

The fourth proportional to 12,886.20, 19,313.70 and 5,475.10 is: 8,206.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,886.20 : 19,313.70 = 5,475.10 : x
  2. Step 2: Convert to fraction form
    12,886.20/19,313.70 = 5,475.10/x
  3. Step 3: Cross multiply
    12,886.20x = 19,313.70 × 5,475.10
  4. Step 4: Simplify right side
    12,886.20x = 105,744,438.87
  5. Step 5: Solve for x
    x = 105,744,438.87/12,886.20
  6. Step 6: Final answer
    x = 8,206.02

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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.