Home / 12,391.14-18,586.70-5,365.40

Finding the Fourth Proportional to 12,391.14, 18,586.70 and 5,365.40

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Solution

The fourth proportional to 12,391.14, 18,586.70 and 5,365.40 is: 8,048.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.14 : 18,586.70 = 5,365.40 : x
  2. Step 2: Convert to fraction form
    12,391.14/18,586.70 = 5,365.40/x
  3. Step 3: Cross multiply
    12,391.14x = 18,586.70 × 5,365.40
  4. Step 4: Simplify right side
    12,391.14x = 99,725,080.18
  5. Step 5: Solve for x
    x = 99,725,080.18/12,391.14
  6. Step 6: Final answer
    x = 8,048.10

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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.