Home / 18,129.63-25,020.14-10,172.60

Finding the Fourth Proportional to 18,129.63, 25,020.14 and 10,172.60

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Solution

The fourth proportional to 18,129.63, 25,020.14 and 10,172.60 is: 14,038.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.63 : 25,020.14 = 10,172.60 : x
  2. Step 2: Convert to fraction form
    18,129.63/25,020.14 = 10,172.60/x
  3. Step 3: Cross multiply
    18,129.63x = 25,020.14 × 10,172.60
  4. Step 4: Simplify right side
    18,129.63x = 254,519,700.20
  5. Step 5: Solve for x
    x = 254,519,700.20/18,129.63
  6. Step 6: Final answer
    x = 14,038.88

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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.