Home / 38,987.58-58,481.34-12,692.31

Finding the Fourth Proportional to 38,987.58, 58,481.34 and 12,692.31

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Solution

The fourth proportional to 38,987.58, 58,481.34 and 12,692.31 is: 19,038.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,987.58 : 58,481.34 = 12,692.31 : x
  2. Step 2: Convert to fraction form
    38,987.58/58,481.34 = 12,692.31/x
  3. Step 3: Cross multiply
    38,987.58x = 58,481.34 × 12,692.31
  4. Step 4: Simplify right side
    38,987.58x = 742,263,296.50
  5. Step 5: Solve for x
    x = 742,263,296.50/38,987.58
  6. Step 6: Final answer
    x = 19,038.46

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1.5x scale

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.