Home / 12,988.31-19,484.91-4,225.73

Finding the Fourth Proportional to 12,988.31, 19,484.91 and 4,225.73

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Solution

The fourth proportional to 12,988.31, 19,484.91 and 4,225.73 is: 6,339.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988.31 : 19,484.91 = 4,225.73 : x
  2. Step 2: Convert to fraction form
    12,988.31/19,484.91 = 4,225.73/x
  3. Step 3: Cross multiply
    12,988.31x = 19,484.91 × 4,225.73
  4. Step 4: Simplify right side
    12,988.31x = 82,337,968.73
  5. Step 5: Solve for x
    x = 82,337,968.73/12,988.31
  6. Step 6: Final answer
    x = 6,339.39

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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.