Home / 13,159.32-18,159.79-7,190.99

Finding the Fourth Proportional to 13,159.32, 18,159.79 and 7,190.99

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Solution

The fourth proportional to 13,159.32, 18,159.79 and 7,190.99 is: 9,923.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,159.32 : 18,159.79 = 7,190.99 : x
  2. Step 2: Convert to fraction form
    13,159.32/18,159.79 = 7,190.99/x
  3. Step 3: Cross multiply
    13,159.32x = 18,159.79 × 7,190.99
  4. Step 4: Simplify right side
    13,159.32x = 130,586,804.12
  5. Step 5: Solve for x
    x = 130,586,804.12/13,159.32
  6. Step 6: Final answer
    x = 9,923.52

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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.