Home / 21,698.93-29,943.87-15,318.83

Finding the Fourth Proportional to 21,698.93, 29,943.87 and 15,318.83

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Solution

The fourth proportional to 21,698.93, 29,943.87 and 15,318.83 is: 21,139.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,698.93 : 29,943.87 = 15,318.83 : x
  2. Step 2: Convert to fraction form
    21,698.93/29,943.87 = 15,318.83/x
  3. Step 3: Cross multiply
    21,698.93x = 29,943.87 × 15,318.83
  4. Step 4: Simplify right side
    21,698.93x = 458,705,054.07
  5. Step 5: Solve for x
    x = 458,705,054.07/21,698.93
  6. Step 6: Final answer
    x = 21,139.52

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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.