Home / 13,917.60-20,878.70-6,897.94

Finding the Fourth Proportional to 13,917.60, 20,878.70 and 6,897.94

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Solution

The fourth proportional to 13,917.60, 20,878.70 and 6,897.94 is: 10,348.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,917.60 : 20,878.70 = 6,897.94 : x
  2. Step 2: Convert to fraction form
    13,917.60/20,878.70 = 6,897.94/x
  3. Step 3: Cross multiply
    13,917.60x = 20,878.70 × 6,897.94
  4. Step 4: Simplify right side
    13,917.60x = 144,020,019.88
  5. Step 5: Solve for x
    x = 144,020,019.88/13,917.60
  6. Step 6: Final answer
    x = 10,348.05

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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.