Home / 26,000.10-39,000.15-19,779.30

Finding the Fourth Proportional to 26,000.10, 39,000.15 and 19,779.30

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Solution

The fourth proportional to 26,000.10, 39,000.15 and 19,779.30 is: 29,668.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,000.10 : 39,000.15 = 19,779.30 : x
  2. Step 2: Convert to fraction form
    26,000.10/39,000.15 = 19,779.30/x
  3. Step 3: Cross multiply
    26,000.10x = 39,000.15 × 19,779.30
  4. Step 4: Simplify right side
    26,000.10x = 771,395,666.90
  5. Step 5: Solve for x
    x = 771,395,666.90/26,000.10
  6. Step 6: Final answer
    x = 29,668.95

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Similar ratio
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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.