Home / 30,315.15-45,477.81-13,674.78

Finding the Fourth Proportional to 30,315.15, 45,477.81 and 13,674.78

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Solution

The fourth proportional to 30,315.15, 45,477.81 and 13,674.78 is: 20,514.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,315.15 : 45,477.81 = 13,674.78 : x
  2. Step 2: Convert to fraction form
    30,315.15/45,477.81 = 13,674.78/x
  3. Step 3: Cross multiply
    30,315.15x = 45,477.81 × 13,674.78
  4. Step 4: Simplify right side
    30,315.15x = 621,899,046.63
  5. Step 5: Solve for x
    x = 621,899,046.63/30,315.15
  6. Step 6: Final answer
    x = 20,514.46

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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.