Home / 30,918.99-46,378.62-13,145.07

Finding the Fourth Proportional to 30,918.99, 46,378.62 and 13,145.07

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Solution

The fourth proportional to 30,918.99, 46,378.62 and 13,145.07 is: 19,717.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,918.99 : 46,378.62 = 13,145.07 : x
  2. Step 2: Convert to fraction form
    30,918.99/46,378.62 = 13,145.07/x
  3. Step 3: Cross multiply
    30,918.99x = 46,378.62 × 13,145.07
  4. Step 4: Simplify right side
    30,918.99x = 609,650,206.40
  5. Step 5: Solve for x
    x = 609,650,206.40/30,918.99
  6. Step 6: Final answer
    x = 19,717.66

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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.