Home / 26,000.20-39,000.30-12,878.20

Finding the Fourth Proportional to 26,000.20, 39,000.30 and 12,878.20

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Solution

The fourth proportional to 26,000.20, 39,000.30 and 12,878.20 is: 19,317.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,000.20 : 39,000.30 = 12,878.20 : x
  2. Step 2: Convert to fraction form
    26,000.20/39,000.30 = 12,878.20/x
  3. Step 3: Cross multiply
    26,000.20x = 39,000.30 × 12,878.20
  4. Step 4: Simplify right side
    26,000.20x = 502,253,663.46
  5. Step 5: Solve for x
    x = 502,253,663.46/26,000.20
  6. Step 6: Final answer
    x = 19,317.30

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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.