Home / 30,344.17-45,511.36-12,811.72

Finding the Fourth Proportional to 30,344.17, 45,511.36 and 12,811.72

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Solution

The fourth proportional to 30,344.17, 45,511.36 and 12,811.72 is: 19,215.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,344.17 : 45,511.36 = 12,811.72 : x
  2. Step 2: Convert to fraction form
    30,344.17/45,511.36 = 12,811.72/x
  3. Step 3: Cross multiply
    30,344.17x = 45,511.36 × 12,811.72
  4. Step 4: Simplify right side
    30,344.17x = 583,078,801.14
  5. Step 5: Solve for x
    x = 583,078,801.14/30,344.17
  6. Step 6: Final answer
    x = 19,215.51

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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.