Home / 13,277.44-18,320.32-7,970.32

Finding the Fourth Proportional to 13,277.44, 18,320.32 and 7,970.32

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Solution

The fourth proportional to 13,277.44, 18,320.32 and 7,970.32 is: 10,997.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,277.44 : 18,320.32 = 7,970.32 : x
  2. Step 2: Convert to fraction form
    13,277.44/18,320.32 = 7,970.32/x
  3. Step 3: Cross multiply
    13,277.44x = 18,320.32 × 7,970.32
  4. Step 4: Simplify right side
    13,277.44x = 146,018,812.90
  5. Step 5: Solve for x
    x = 146,018,812.90/13,277.44
  6. Step 6: Final answer
    x = 10,997.51

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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.