Home / 15,916.64-21,975.93-9,950.99

Finding the Fourth Proportional to 15,916.64, 21,975.93 and 9,950.99

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Solution

The fourth proportional to 15,916.64, 21,975.93 and 9,950.99 is: 13,739.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,916.64 : 21,975.93 = 9,950.99 : x
  2. Step 2: Convert to fraction form
    15,916.64/21,975.93 = 9,950.99/x
  3. Step 3: Cross multiply
    15,916.64x = 21,975.93 × 9,950.99
  4. Step 4: Simplify right side
    15,916.64x = 218,682,149.79
  5. Step 5: Solve for x
    x = 218,682,149.79/15,916.64
  6. Step 6: Final answer
    x = 13,739.22

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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.