Home / 30,918.40-46,378.32-7,545.28

Finding the Fourth Proportional to 30,918.40, 46,378.32 and 7,545.28

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Solution

The fourth proportional to 30,918.40, 46,378.32 and 7,545.28 is: 11,318.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,918.40 : 46,378.32 = 7,545.28 : x
  2. Step 2: Convert to fraction form
    30,918.40/46,378.32 = 7,545.28/x
  3. Step 3: Cross multiply
    30,918.40x = 46,378.32 × 7,545.28
  4. Step 4: Simplify right side
    30,918.40x = 349,937,410.33
  5. Step 5: Solve for x
    x = 349,937,410.33/30,918.40
  6. Step 6: Final answer
    x = 11,318.10

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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.