Home / 30,515.03-45,779.85-12,735.80

Finding the Fourth Proportional to 30,515.03, 45,779.85 and 12,735.80

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Solution

The fourth proportional to 30,515.03, 45,779.85 and 12,735.80 is: 19,106.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,515.03 : 45,779.85 = 12,735.80 : x
  2. Step 2: Convert to fraction form
    30,515.03/45,779.85 = 12,735.80/x
  3. Step 3: Cross multiply
    30,515.03x = 45,779.85 × 12,735.80
  4. Step 4: Simplify right side
    30,515.03x = 583,042,784.73
  5. Step 5: Solve for x
    x = 583,042,784.73/30,515.03
  6. Step 6: Final answer
    x = 19,106.74

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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.