Home / 22,557.34-31,128.87-12,485.80

Finding the Fourth Proportional to 22,557.34, 31,128.87 and 12,485.80

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Solution

The fourth proportional to 22,557.34, 31,128.87 and 12,485.80 is: 17,230.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,557.34 : 31,128.87 = 12,485.80 : x
  2. Step 2: Convert to fraction form
    22,557.34/31,128.87 = 12,485.80/x
  3. Step 3: Cross multiply
    22,557.34x = 31,128.87 × 12,485.80
  4. Step 4: Simplify right side
    22,557.34x = 388,668,845.05
  5. Step 5: Solve for x
    x = 388,668,845.05/22,557.34
  6. Step 6: Final answer
    x = 17,230.26

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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.