Home / 12,636.48-18,950.40-5,139.84

Finding the Fourth Proportional to 12,636.48, 18,950.40 and 5,139.84

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Solution

The fourth proportional to 12,636.48, 18,950.40 and 5,139.84 is: 7,708.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.48 : 18,950.40 = 5,139.84 : x
  2. Step 2: Convert to fraction form
    12,636.48/18,950.40 = 5,139.84/x
  3. Step 3: Cross multiply
    12,636.48x = 18,950.40 × 5,139.84
  4. Step 4: Simplify right side
    12,636.48x = 97,402,023.94
  5. Step 5: Solve for x
    x = 97,402,023.94/12,636.48
  6. Step 6: Final answer
    x = 7,708.00

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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.