Home / 30,561.21-45,859.73-12,790.40

Finding the Fourth Proportional to 30,561.21, 45,859.73 and 12,790.40

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Solution

The fourth proportional to 30,561.21, 45,859.73 and 12,790.40 is: 19,193.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,561.21 : 45,859.73 = 12,790.40 : x
  2. Step 2: Convert to fraction form
    30,561.21/45,859.73 = 12,790.40/x
  3. Step 3: Cross multiply
    30,561.21x = 45,859.73 × 12,790.40
  4. Step 4: Simplify right side
    30,561.21x = 586,563,997.34
  5. Step 5: Solve for x
    x = 586,563,997.34/30,561.21
  6. Step 6: Final answer
    x = 19,193.09

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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.