Home / 30,579.98-45,868.23-8,391.74

Finding the Fourth Proportional to 30,579.98, 45,868.23 and 8,391.74

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Solution

The fourth proportional to 30,579.98, 45,868.23 and 8,391.74 is: 12,587.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,579.98 : 45,868.23 = 8,391.74 : x
  2. Step 2: Convert to fraction form
    30,579.98/45,868.23 = 8,391.74/x
  3. Step 3: Cross multiply
    30,579.98x = 45,868.23 × 8,391.74
  4. Step 4: Simplify right side
    30,579.98x = 384,914,031.08
  5. Step 5: Solve for x
    x = 384,914,031.08/30,579.98
  6. Step 6: Final answer
    x = 12,587.13

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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.