Home / 12,802.40-17,667.38-7,137.50

Finding the Fourth Proportional to 12,802.40, 17,667.38 and 7,137.50

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Solution

The fourth proportional to 12,802.40, 17,667.38 and 7,137.50 is: 9,849.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,802.40 : 17,667.38 = 7,137.50 : x
  2. Step 2: Convert to fraction form
    12,802.40/17,667.38 = 7,137.50/x
  3. Step 3: Cross multiply
    12,802.40x = 17,667.38 × 7,137.50
  4. Step 4: Simplify right side
    12,802.40x = 126,100,889.06
  5. Step 5: Solve for x
    x = 126,100,889.06/12,802.40
  6. Step 6: Final answer
    x = 9,849.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.