Home / 13,999.69-21,000.75-5,117.46

Finding the Fourth Proportional to 13,999.69, 21,000.75 and 5,117.46

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Solution

The fourth proportional to 13,999.69, 21,000.75 and 5,117.46 is: 7,676.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,999.69 : 21,000.75 = 5,117.46 : x
  2. Step 2: Convert to fraction form
    13,999.69/21,000.75 = 5,117.46/x
  3. Step 3: Cross multiply
    13,999.69x = 21,000.75 × 5,117.46
  4. Step 4: Simplify right side
    13,999.69x = 107,470,498.10
  5. Step 5: Solve for x
    x = 107,470,498.10/13,999.69
  6. Step 6: Final answer
    x = 7,676.63

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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.