Home / 28,663.70-39,555.36-15,916.22

Finding the Fourth Proportional to 28,663.70, 39,555.36 and 15,916.22

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Solution

The fourth proportional to 28,663.70, 39,555.36 and 15,916.22 is: 21,964.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,663.70 : 39,555.36 = 15,916.22 : x
  2. Step 2: Convert to fraction form
    28,663.70/39,555.36 = 15,916.22/x
  3. Step 3: Cross multiply
    28,663.70x = 39,555.36 × 15,916.22
  4. Step 4: Simplify right side
    28,663.70x = 629,571,811.94
  5. Step 5: Solve for x
    x = 629,571,811.94/28,663.70
  6. Step 6: Final answer
    x = 21,964.08

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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.