Home / 15,206.36-22,709.70-12,961.28

Finding the Fourth Proportional to 15,206.36, 22,709.70 and 12,961.28

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Solution

The fourth proportional to 15,206.36, 22,709.70 and 12,961.28 is: 19,356.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,206.36 : 22,709.70 = 12,961.28 : x
  2. Step 2: Convert to fraction form
    15,206.36/22,709.70 = 12,961.28/x
  3. Step 3: Cross multiply
    15,206.36x = 22,709.70 × 12,961.28
  4. Step 4: Simplify right side
    15,206.36x = 294,346,780.42
  5. Step 5: Solve for x
    x = 294,346,780.42/15,206.36
  6. Step 6: Final answer
    x = 19,356.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.