Home / 13,828.45-19,089.78-9,359.45

Finding the Fourth Proportional to 13,828.45, 19,089.78 and 9,359.45

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Solution

The fourth proportional to 13,828.45, 19,089.78 and 9,359.45 is: 12,920.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.45 : 19,089.78 = 9,359.45 : x
  2. Step 2: Convert to fraction form
    13,828.45/19,089.78 = 9,359.45/x
  3. Step 3: Cross multiply
    13,828.45x = 19,089.78 × 9,359.45
  4. Step 4: Simplify right side
    13,828.45x = 178,669,782.46
  5. Step 5: Solve for x
    x = 178,669,782.46/13,828.45
  6. Step 6: Final answer
    x = 12,920.45

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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.