Home / 15,128.40-22,692.60-13,281.60

Finding the Fourth Proportional to 15,128.40, 22,692.60 and 13,281.60

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Solution

The fourth proportional to 15,128.40, 22,692.60 and 13,281.60 is: 19,922.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,128.40 : 22,692.60 = 13,281.60 : x
  2. Step 2: Convert to fraction form
    15,128.40/22,692.60 = 13,281.60/x
  3. Step 3: Cross multiply
    15,128.40x = 22,692.60 × 13,281.60
  4. Step 4: Simplify right side
    15,128.40x = 301,394,036.16
  5. Step 5: Solve for x
    x = 301,394,036.16/15,128.40
  6. Step 6: Final answer
    x = 19,922.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.