Home / 12,840.90-17,722.62-7,462.50

Finding the Fourth Proportional to 12,840.90, 17,722.62 and 7,462.50

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Solution

The fourth proportional to 12,840.90, 17,722.62 and 7,462.50 is: 10,299.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,840.90 : 17,722.62 = 7,462.50 : x
  2. Step 2: Convert to fraction form
    12,840.90/17,722.62 = 7,462.50/x
  3. Step 3: Cross multiply
    12,840.90x = 17,722.62 × 7,462.50
  4. Step 4: Simplify right side
    12,840.90x = 132,255,051.75
  5. Step 5: Solve for x
    x = 132,255,051.75/12,840.90
  6. Step 6: Final answer
    x = 10,299.52

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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.