Home / 22,557.12-31,128.60-13,486.65

Finding the Fourth Proportional to 22,557.12, 31,128.60 and 13,486.65

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Solution

The fourth proportional to 22,557.12, 31,128.60 and 13,486.65 is: 18,611.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,557.12 : 31,128.60 = 13,486.65 : x
  2. Step 2: Convert to fraction form
    22,557.12/31,128.60 = 13,486.65/x
  3. Step 3: Cross multiply
    22,557.12x = 31,128.60 × 13,486.65
  4. Step 4: Simplify right side
    22,557.12x = 419,820,533.19
  5. Step 5: Solve for x
    x = 419,820,533.19/22,557.12
  6. Step 6: Final answer
    x = 18,611.44

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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.