Home / 38,692.90-58,031.12-12,390.58

Finding the Fourth Proportional to 38,692.90, 58,031.12 and 12,390.58

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Solution

The fourth proportional to 38,692.90, 58,031.12 and 12,390.58 is: 18,583.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,692.90 : 58,031.12 = 12,390.58 : x
  2. Step 2: Convert to fraction form
    38,692.90/58,031.12 = 12,390.58/x
  3. Step 3: Cross multiply
    38,692.90x = 58,031.12 × 12,390.58
  4. Step 4: Simplify right side
    38,692.90x = 719,039,234.85
  5. Step 5: Solve for x
    x = 719,039,234.85/38,692.90
  6. Step 6: Final answer
    x = 18,583.23

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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.