Home / 12,836.80-19,271.40-6,918.40

Finding the Fourth Proportional to 12,836.80, 19,271.40 and 6,918.40

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Solution

The fourth proportional to 12,836.80, 19,271.40 and 6,918.40 is: 10,386.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,836.80 : 19,271.40 = 6,918.40 : x
  2. Step 2: Convert to fraction form
    12,836.80/19,271.40 = 6,918.40/x
  3. Step 3: Cross multiply
    12,836.80x = 19,271.40 × 6,918.40
  4. Step 4: Simplify right side
    12,836.80x = 133,327,253.76
  5. Step 5: Solve for x
    x = 133,327,253.76/12,836.80
  6. Step 6: Final answer
    x = 10,386.33

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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.