Home / 16,988.96-25,483.52-7,139.36

Finding the Fourth Proportional to 16,988.96, 25,483.52 and 7,139.36

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Solution

The fourth proportional to 16,988.96, 25,483.52 and 7,139.36 is: 10,709.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,988.96 : 25,483.52 = 7,139.36 : x
  2. Step 2: Convert to fraction form
    16,988.96/25,483.52 = 7,139.36/x
  3. Step 3: Cross multiply
    16,988.96x = 25,483.52 × 7,139.36
  4. Step 4: Simplify right side
    16,988.96x = 181,936,023.35
  5. Step 5: Solve for x
    x = 181,936,023.35/16,988.96
  6. Step 6: Final answer
    x = 10,709.07

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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.