Home / 12,926.60-17,840.40-7,621.91

Finding the Fourth Proportional to 12,926.60, 17,840.40 and 7,621.91

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Solution

The fourth proportional to 12,926.60, 17,840.40 and 7,621.91 is: 10,519.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,926.60 : 17,840.40 = 7,621.91 : x
  2. Step 2: Convert to fraction form
    12,926.60/17,840.40 = 7,621.91/x
  3. Step 3: Cross multiply
    12,926.60x = 17,840.40 × 7,621.91
  4. Step 4: Simplify right side
    12,926.60x = 135,977,923.16
  5. Step 5: Solve for x
    x = 135,977,923.16/12,926.60
  6. Step 6: Final answer
    x = 10,519.23

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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.