Home / 12,778.02-19,166.86-4,457.88

Finding the Fourth Proportional to 12,778.02, 19,166.86 and 4,457.88

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Solution

The fourth proportional to 12,778.02, 19,166.86 and 4,457.88 is: 6,686.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778.02 : 19,166.86 = 4,457.88 : x
  2. Step 2: Convert to fraction form
    12,778.02/19,166.86 = 4,457.88/x
  3. Step 3: Cross multiply
    12,778.02x = 19,166.86 × 4,457.88
  4. Step 4: Simplify right side
    12,778.02x = 85,443,561.86
  5. Step 5: Solve for x
    x = 85,443,561.86/12,778.02
  6. Step 6: Final answer
    x = 6,686.76

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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.