Home / 30,556.15-45,828.63-12,782.08

Finding the Fourth Proportional to 30,556.15, 45,828.63 and 12,782.08

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Solution

The fourth proportional to 30,556.15, 45,828.63 and 12,782.08 is: 19,170.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,556.15 : 45,828.63 = 12,782.08 : x
  2. Step 2: Convert to fraction form
    30,556.15/45,828.63 = 12,782.08/x
  3. Step 3: Cross multiply
    30,556.15x = 45,828.63 × 12,782.08
  4. Step 4: Simplify right side
    30,556.15x = 585,784,969.13
  5. Step 5: Solve for x
    x = 585,784,969.13/30,556.15
  6. Step 6: Final answer
    x = 19,170.77

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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.