Home / 14,115.90-19,480.82-7,828.28

Finding the Fourth Proportional to 14,115.90, 19,480.82 and 7,828.28

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Solution

The fourth proportional to 14,115.90, 19,480.82 and 7,828.28 is: 10,803.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,115.90 : 19,480.82 = 7,828.28 : x
  2. Step 2: Convert to fraction form
    14,115.90/19,480.82 = 7,828.28/x
  3. Step 3: Cross multiply
    14,115.90x = 19,480.82 × 7,828.28
  4. Step 4: Simplify right side
    14,115.90x = 152,501,313.59
  5. Step 5: Solve for x
    x = 152,501,313.59/14,115.90
  6. Step 6: Final answer
    x = 10,803.51

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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.