Home / 28,516.79-39,353.16-15,941.54

Finding the Fourth Proportional to 28,516.79, 39,353.16 and 15,941.54

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Solution

The fourth proportional to 28,516.79, 39,353.16 and 15,941.54 is: 21,999.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,516.79 : 39,353.16 = 15,941.54 : x
  2. Step 2: Convert to fraction form
    28,516.79/39,353.16 = 15,941.54/x
  3. Step 3: Cross multiply
    28,516.79x = 39,353.16 × 15,941.54
  4. Step 4: Simplify right side
    28,516.79x = 627,349,777.50
  5. Step 5: Solve for x
    x = 627,349,777.50/28,516.79
  6. Step 6: Final answer
    x = 21,999.32

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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.