Home / 12,861.51-19,294.40-4,427.67

Finding the Fourth Proportional to 12,861.51, 19,294.40 and 4,427.67

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Solution

The fourth proportional to 12,861.51, 19,294.40 and 4,427.67 is: 6,642.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,861.51 : 19,294.40 = 4,427.67 : x
  2. Step 2: Convert to fraction form
    12,861.51/19,294.40 = 4,427.67/x
  3. Step 3: Cross multiply
    12,861.51x = 19,294.40 × 4,427.67
  4. Step 4: Simplify right side
    12,861.51x = 85,429,236.05
  5. Step 5: Solve for x
    x = 85,429,236.05/12,861.51
  6. Step 6: Final answer
    x = 6,642.24

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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.