Home / 30,045.12-41,448.48-19,438.20

Finding the Fourth Proportional to 30,045.12, 41,448.48 and 19,438.20

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Solution

The fourth proportional to 30,045.12, 41,448.48 and 19,438.20 is: 26,815.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,045.12 : 41,448.48 = 19,438.20 : x
  2. Step 2: Convert to fraction form
    30,045.12/41,448.48 = 19,438.20/x
  3. Step 3: Cross multiply
    30,045.12x = 41,448.48 × 19,438.20
  4. Step 4: Simplify right side
    30,045.12x = 805,683,843.94
  5. Step 5: Solve for x
    x = 805,683,843.94/30,045.12
  6. Step 6: Final answer
    x = 26,815.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.