Home / 18,129.60-25,018.83-10,581.12

Finding the Fourth Proportional to 18,129.60, 25,018.83 and 10,581.12

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Solution

The fourth proportional to 18,129.60, 25,018.83 and 10,581.12 is: 14,601.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.60 : 25,018.83 = 10,581.12 : x
  2. Step 2: Convert to fraction form
    18,129.60/25,018.83 = 10,581.12/x
  3. Step 3: Cross multiply
    18,129.60x = 25,018.83 × 10,581.12
  4. Step 4: Simplify right side
    18,129.60x = 264,727,242.49
  5. Step 5: Solve for x
    x = 264,727,242.49/18,129.60
  6. Step 6: Final answer
    x = 14,601.94

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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.