Home / 18,240.70-25,172.16-9,857.20

Finding the Fourth Proportional to 18,240.70, 25,172.16 and 9,857.20

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Solution

The fourth proportional to 18,240.70, 25,172.16 and 9,857.20 is: 13,602.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,240.70 : 25,172.16 = 9,857.20 : x
  2. Step 2: Convert to fraction form
    18,240.70/25,172.16 = 9,857.20/x
  3. Step 3: Cross multiply
    18,240.70x = 25,172.16 × 9,857.20
  4. Step 4: Simplify right side
    18,240.70x = 248,127,015.55
  5. Step 5: Solve for x
    x = 248,127,015.55/18,240.70
  6. Step 6: Final answer
    x = 13,602.93

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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.