Home / 26,427.63-39,612.72-12,378.90

Finding the Fourth Proportional to 26,427.63, 39,612.72 and 12,378.90

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Solution

The fourth proportional to 26,427.63, 39,612.72 and 12,378.90 is: 18,554.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,427.63 : 39,612.72 = 12,378.90 : x
  2. Step 2: Convert to fraction form
    26,427.63/39,612.72 = 12,378.90/x
  3. Step 3: Cross multiply
    26,427.63x = 39,612.72 × 12,378.90
  4. Step 4: Simplify right side
    26,427.63x = 490,361,899.61
  5. Step 5: Solve for x
    x = 490,361,899.61/26,427.63
  6. Step 6: Final answer
    x = 18,554.89

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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.