Home / 13,159.20-18,159.84-7,190.48

Finding the Fourth Proportional to 13,159.20, 18,159.84 and 7,190.48

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Solution

The fourth proportional to 13,159.20, 18,159.84 and 7,190.48 is: 9,922.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,159.20 : 18,159.84 = 7,190.48 : x
  2. Step 2: Convert to fraction form
    13,159.20/18,159.84 = 7,190.48/x
  3. Step 3: Cross multiply
    13,159.20x = 18,159.84 × 7,190.48
  4. Step 4: Simplify right side
    13,159.20x = 130,577,966.32
  5. Step 5: Solve for x
    x = 130,577,966.32/13,159.20
  6. Step 6: Final answer
    x = 9,922.94

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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.