Home / 13,012.61-19,538.36-12,818.21

Finding the Fourth Proportional to 13,012.61, 19,538.36 and 12,818.21

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Solution

The fourth proportional to 13,012.61, 19,538.36 and 12,818.21 is: 19,246.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,012.61 : 19,538.36 = 12,818.21 : x
  2. Step 2: Convert to fraction form
    13,012.61/19,538.36 = 12,818.21/x
  3. Step 3: Cross multiply
    13,012.61x = 19,538.36 × 12,818.21
  4. Step 4: Simplify right side
    13,012.61x = 250,446,737.44
  5. Step 5: Solve for x
    x = 250,446,737.44/13,012.61
  6. Step 6: Final answer
    x = 19,246.46

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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.