Home / 12,903.30-19,369.35-7,712.10

Finding the Fourth Proportional to 12,903.30, 19,369.35 and 7,712.10

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Solution

The fourth proportional to 12,903.30, 19,369.35 and 7,712.10 is: 11,576.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,903.30 : 19,369.35 = 7,712.10 : x
  2. Step 2: Convert to fraction form
    12,903.30/19,369.35 = 7,712.10/x
  3. Step 3: Cross multiply
    12,903.30x = 19,369.35 × 7,712.10
  4. Step 4: Simplify right side
    12,903.30x = 149,378,364.14
  5. Step 5: Solve for x
    x = 149,378,364.14/12,903.30
  6. Step 6: Final answer
    x = 11,576.76

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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.