Home / 12,860.28-19,268.40-7,020.98

Finding the Fourth Proportional to 12,860.28, 19,268.40 and 7,020.98

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Solution

The fourth proportional to 12,860.28, 19,268.40 and 7,020.98 is: 10,519.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,860.28 : 19,268.40 = 7,020.98 : x
  2. Step 2: Convert to fraction form
    12,860.28/19,268.40 = 7,020.98/x
  3. Step 3: Cross multiply
    12,860.28x = 19,268.40 × 7,020.98
  4. Step 4: Simplify right side
    12,860.28x = 135,283,051.03
  5. Step 5: Solve for x
    x = 135,283,051.03/12,860.28
  6. Step 6: Final answer
    x = 10,519.45

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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.