Home / 30,498.40-45,747.60-11,779.30

Finding the Fourth Proportional to 30,498.40, 45,747.60 and 11,779.30

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Solution

The fourth proportional to 30,498.40, 45,747.60 and 11,779.30 is: 17,668.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,498.40 : 45,747.60 = 11,779.30 : x
  2. Step 2: Convert to fraction form
    30,498.40/45,747.60 = 11,779.30/x
  3. Step 3: Cross multiply
    30,498.40x = 45,747.60 × 11,779.30
  4. Step 4: Simplify right side
    30,498.40x = 538,874,704.68
  5. Step 5: Solve for x
    x = 538,874,704.68/30,498.40
  6. Step 6: Final answer
    x = 17,668.95

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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.