Home / 12,323.40-18,485.10-8,386.80

Finding the Fourth Proportional to 12,323.40, 18,485.10 and 8,386.80

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Solution

The fourth proportional to 12,323.40, 18,485.10 and 8,386.80 is: 12,580.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,323.40 : 18,485.10 = 8,386.80 : x
  2. Step 2: Convert to fraction form
    12,323.40/18,485.10 = 8,386.80/x
  3. Step 3: Cross multiply
    12,323.40x = 18,485.10 × 8,386.80
  4. Step 4: Simplify right side
    12,323.40x = 155,030,836.68
  5. Step 5: Solve for x
    x = 155,030,836.68/12,323.40
  6. Step 6: Final answer
    x = 12,580.20

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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.