Home / 12,695.40-19,030.50-6,436.80

Finding the Fourth Proportional to 12,695.40, 19,030.50 and 6,436.80

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Solution

The fourth proportional to 12,695.40, 19,030.50 and 6,436.80 is: 9,648.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,695.40 : 19,030.50 = 6,436.80 : x
  2. Step 2: Convert to fraction form
    12,695.40/19,030.50 = 6,436.80/x
  3. Step 3: Cross multiply
    12,695.40x = 19,030.50 × 6,436.80
  4. Step 4: Simplify right side
    12,695.40x = 122,495,522.40
  5. Step 5: Solve for x
    x = 122,495,522.40/12,695.40
  6. Step 6: Final answer
    x = 9,648.81

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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.