Home / 30,918.78-46,378.21-7,545.10

Finding the Fourth Proportional to 30,918.78, 46,378.21 and 7,545.10

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Solution

The fourth proportional to 30,918.78, 46,378.21 and 7,545.10 is: 11,317.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,918.78 : 46,378.21 = 7,545.10 : x
  2. Step 2: Convert to fraction form
    30,918.78/46,378.21 = 7,545.10/x
  3. Step 3: Cross multiply
    30,918.78x = 46,378.21 × 7,545.10
  4. Step 4: Simplify right side
    30,918.78x = 349,928,232.27
  5. Step 5: Solve for x
    x = 349,928,232.27/30,918.78
  6. Step 6: Final answer
    x = 11,317.66

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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.