Home / 12,929.88-19,390.02-4,607.68

Finding the Fourth Proportional to 12,929.88, 19,390.02 and 4,607.68

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Solution

The fourth proportional to 12,929.88, 19,390.02 and 4,607.68 is: 6,909.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,929.88 : 19,390.02 = 4,607.68 : x
  2. Step 2: Convert to fraction form
    12,929.88/19,390.02 = 4,607.68/x
  3. Step 3: Cross multiply
    12,929.88x = 19,390.02 × 4,607.68
  4. Step 4: Simplify right side
    12,929.88x = 89,343,007.35
  5. Step 5: Solve for x
    x = 89,343,007.35/12,929.88
  6. Step 6: Final answer
    x = 6,909.81

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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.