Home / 12,948.60-17,868.42-7,911.84

Finding the Fourth Proportional to 12,948.60, 17,868.42 and 7,911.84

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Solution

The fourth proportional to 12,948.60, 17,868.42 and 7,911.84 is: 10,917.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,948.60 : 17,868.42 = 7,911.84 : x
  2. Step 2: Convert to fraction form
    12,948.60/17,868.42 = 7,911.84/x
  3. Step 3: Cross multiply
    12,948.60x = 17,868.42 × 7,911.84
  4. Step 4: Simplify right side
    12,948.60x = 141,372,080.09
  5. Step 5: Solve for x
    x = 141,372,080.09/12,948.60
  6. Step 6: Final answer
    x = 10,917.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.