Home / 22,557.14-31,128.05-12,485.60

Finding the Fourth Proportional to 22,557.14, 31,128.05 and 12,485.60

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Solution

The fourth proportional to 22,557.14, 31,128.05 and 12,485.60 is: 17,229.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,557.14 : 31,128.05 = 12,485.60 : x
  2. Step 2: Convert to fraction form
    22,557.14/31,128.05 = 12,485.60/x
  3. Step 3: Cross multiply
    22,557.14x = 31,128.05 × 12,485.60
  4. Step 4: Simplify right side
    22,557.14x = 388,652,256.65
  5. Step 5: Solve for x
    x = 388,652,256.65/22,557.14
  6. Step 6: Final answer
    x = 17,229.68

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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.