Home / 12,139.60-16,753.48-6,762.88

Finding the Fourth Proportional to 12,139.60, 16,753.48 and 6,762.88

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Solution

The fourth proportional to 12,139.60, 16,753.48 and 6,762.88 is: 9,333.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139.60 : 16,753.48 = 6,762.88 : x
  2. Step 2: Convert to fraction form
    12,139.60/16,753.48 = 6,762.88/x
  3. Step 3: Cross multiply
    12,139.60x = 16,753.48 × 6,762.88
  4. Step 4: Simplify right side
    12,139.60x = 113,301,774.82
  5. Step 5: Solve for x
    x = 113,301,774.82/12,139.60
  6. Step 6: Final answer
    x = 9,333.24

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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.