Home / 12,656.90-18,987.24-6,810.32

Finding the Fourth Proportional to 12,656.90, 18,987.24 and 6,810.32

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Solution

The fourth proportional to 12,656.90, 18,987.24 and 6,810.32 is: 10,216.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,656.90 : 18,987.24 = 6,810.32 : x
  2. Step 2: Convert to fraction form
    12,656.90/18,987.24 = 6,810.32/x
  3. Step 3: Cross multiply
    12,656.90x = 18,987.24 × 6,810.32
  4. Step 4: Simplify right side
    12,656.90x = 129,309,180.32
  5. Step 5: Solve for x
    x = 129,309,180.32/12,656.90
  6. Step 6: Final answer
    x = 10,216.50

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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.