Home / 15,629.28-21,569.67-9,342.87

Finding the Fourth Proportional to 15,629.28, 21,569.67 and 9,342.87

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Solution

The fourth proportional to 15,629.28, 21,569.67 and 9,342.87 is: 12,893.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,629.28 : 21,569.67 = 9,342.87 : x
  2. Step 2: Convert to fraction form
    15,629.28/21,569.67 = 9,342.87/x
  3. Step 3: Cross multiply
    15,629.28x = 21,569.67 × 9,342.87
  4. Step 4: Simplify right side
    15,629.28x = 201,522,622.75
  5. Step 5: Solve for x
    x = 201,522,622.75/15,629.28
  6. Step 6: Final answer
    x = 12,893.92

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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.