Home / 28,664.12-39,555.73-15,916.91

Finding the Fourth Proportional to 28,664.12, 39,555.73 and 15,916.91

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Solution

The fourth proportional to 28,664.12, 39,555.73 and 15,916.91 is: 21,964.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,664.12 : 39,555.73 = 15,916.91 : x
  2. Step 2: Convert to fraction form
    28,664.12/39,555.73 = 15,916.91/x
  3. Step 3: Cross multiply
    28,664.12x = 39,555.73 × 15,916.91
  4. Step 4: Simplify right side
    28,664.12x = 629,604,994.39
  5. Step 5: Solve for x
    x = 629,604,994.39/28,664.12
  6. Step 6: Final answer
    x = 21,964.92

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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.