Home / 30,443.12-45,668.32-11,718.80

Finding the Fourth Proportional to 30,443.12, 45,668.32 and 11,718.80

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Solution

The fourth proportional to 30,443.12, 45,668.32 and 11,718.80 is: 17,579.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,443.12 : 45,668.32 = 11,718.80 : x
  2. Step 2: Convert to fraction form
    30,443.12/45,668.32 = 11,718.80/x
  3. Step 3: Cross multiply
    30,443.12x = 45,668.32 × 11,718.80
  4. Step 4: Simplify right side
    30,443.12x = 535,177,908.42
  5. Step 5: Solve for x
    x = 535,177,908.42/30,443.12
  6. Step 6: Final answer
    x = 17,579.60

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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.