Home / 18,320.40-27,478.98-5,172.48

Finding the Fourth Proportional to 18,320.40, 27,478.98 and 5,172.48

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Solution

The fourth proportional to 18,320.40, 27,478.98 and 5,172.48 is: 7,758.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,320.40 : 27,478.98 = 5,172.48 : x
  2. Step 2: Convert to fraction form
    18,320.40/27,478.98 = 5,172.48/x
  3. Step 3: Cross multiply
    18,320.40x = 27,478.98 × 5,172.48
  4. Step 4: Simplify right side
    18,320.40x = 142,134,474.47
  5. Step 5: Solve for x
    x = 142,134,474.47/18,320.40
  6. Step 6: Final answer
    x = 7,758.26

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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.