Home / 31,318.28-43,220.99-18,579.01

Finding the Fourth Proportional to 31,318.28, 43,220.99 and 18,579.01

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Solution

The fourth proportional to 31,318.28, 43,220.99 and 18,579.01 is: 25,640.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,318.28 : 43,220.99 = 18,579.01 : x
  2. Step 2: Convert to fraction form
    31,318.28/43,220.99 = 18,579.01/x
  3. Step 3: Cross multiply
    31,318.28x = 43,220.99 × 18,579.01
  4. Step 4: Simplify right side
    31,318.28x = 803,003,143.81
  5. Step 5: Solve for x
    x = 803,003,143.81/31,318.28
  6. Step 6: Final answer
    x = 25,640.08

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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.