Home / 12,705.18-19,051.26-5,307.63

Finding the Fourth Proportional to 12,705.18, 19,051.26 and 5,307.63

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Solution

The fourth proportional to 12,705.18, 19,051.26 and 5,307.63 is: 7,958.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,705.18 : 19,051.26 = 5,307.63 : x
  2. Step 2: Convert to fraction form
    12,705.18/19,051.26 = 5,307.63/x
  3. Step 3: Cross multiply
    12,705.18x = 19,051.26 × 5,307.63
  4. Step 4: Simplify right side
    12,705.18x = 101,117,039.11
  5. Step 5: Solve for x
    x = 101,117,039.11/12,705.18
  6. Step 6: Final answer
    x = 7,958.73

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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.