Home / 30,130.85-45,189.77-12,344.06

Finding the Fourth Proportional to 30,130.85, 45,189.77 and 12,344.06

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Solution

The fourth proportional to 30,130.85, 45,189.77 and 12,344.06 is: 18,513.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,130.85 : 45,189.77 = 12,344.06 : x
  2. Step 2: Convert to fraction form
    30,130.85/45,189.77 = 12,344.06/x
  3. Step 3: Cross multiply
    30,130.85x = 45,189.77 × 12,344.06
  4. Step 4: Simplify right side
    30,130.85x = 557,825,376.10
  5. Step 5: Solve for x
    x = 557,825,376.10/30,130.85
  6. Step 6: Final answer
    x = 18,513.43

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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.