Home / 30,447.98-45,675.60-12,915.50

Finding the Fourth Proportional to 30,447.98, 45,675.60 and 12,915.50

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Solution

The fourth proportional to 30,447.98, 45,675.60 and 12,915.50 is: 19,374.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,447.98 : 45,675.60 = 12,915.50 : x
  2. Step 2: Convert to fraction form
    30,447.98/45,675.60 = 12,915.50/x
  3. Step 3: Cross multiply
    30,447.98x = 45,675.60 × 12,915.50
  4. Step 4: Simplify right side
    30,447.98x = 589,923,211.80
  5. Step 5: Solve for x
    x = 589,923,211.80/30,447.98
  6. Step 6: Final answer
    x = 19,374.79

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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.