Home / 28,664.69-39,557.63-15,918.67

Finding the Fourth Proportional to 28,664.69, 39,557.63 and 15,918.67

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Solution

The fourth proportional to 28,664.69, 39,557.63 and 15,918.67 is: 21,967.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,664.69 : 39,557.63 = 15,918.67 : x
  2. Step 2: Convert to fraction form
    28,664.69/39,557.63 = 15,918.67/x
  3. Step 3: Cross multiply
    28,664.69x = 39,557.63 × 15,918.67
  4. Step 4: Simplify right side
    28,664.69x = 629,704,679.46
  5. Step 5: Solve for x
    x = 629,704,679.46/28,664.69
  6. Step 6: Final answer
    x = 21,967.96

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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.