Home / 18,129.18-25,019.67-10,172.10

Finding the Fourth Proportional to 18,129.18, 25,019.67 and 10,172.10

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Solution

The fourth proportional to 18,129.18, 25,019.67 and 10,172.10 is: 14,038.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.18 : 25,019.67 = 10,172.10 : x
  2. Step 2: Convert to fraction form
    18,129.18/25,019.67 = 10,172.10/x
  3. Step 3: Cross multiply
    18,129.18x = 25,019.67 × 10,172.10
  4. Step 4: Simplify right side
    18,129.18x = 254,502,585.21
  5. Step 5: Solve for x
    x = 254,502,585.21/18,129.18
  6. Step 6: Final answer
    x = 14,038.28

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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.