Home / 12,862.19-19,300.68-6,939.07

Finding the Fourth Proportional to 12,862.19, 19,300.68 and 6,939.07

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Solution

The fourth proportional to 12,862.19, 19,300.68 and 6,939.07 is: 10,412.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,862.19 : 19,300.68 = 6,939.07 : x
  2. Step 2: Convert to fraction form
    12,862.19/19,300.68 = 6,939.07/x
  3. Step 3: Cross multiply
    12,862.19x = 19,300.68 × 6,939.07
  4. Step 4: Simplify right side
    12,862.19x = 133,928,721.32
  5. Step 5: Solve for x
    x = 133,928,721.32/12,862.19
  6. Step 6: Final answer
    x = 10,412.59

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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.