Home / 12,888.70-19,323.59-4,118.56

Finding the Fourth Proportional to 12,888.70, 19,323.59 and 4,118.56

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Solution

The fourth proportional to 12,888.70, 19,323.59 and 4,118.56 is: 6,174.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.70 : 19,323.59 = 4,118.56 : x
  2. Step 2: Convert to fraction form
    12,888.70/19,323.59 = 4,118.56/x
  3. Step 3: Cross multiply
    12,888.70x = 19,323.59 × 4,118.56
  4. Step 4: Simplify right side
    12,888.70x = 79,585,364.83
  5. Step 5: Solve for x
    x = 79,585,364.83/12,888.70
  6. Step 6: Final answer
    x = 6,174.82

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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.