Home / 13,579.65-18,739.40-7,914.69

Finding the Fourth Proportional to 13,579.65, 18,739.40 and 7,914.69

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Solution

The fourth proportional to 13,579.65, 18,739.40 and 7,914.69 is: 10,921.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.65 : 18,739.40 = 7,914.69 : x
  2. Step 2: Convert to fraction form
    13,579.65/18,739.40 = 7,914.69/x
  3. Step 3: Cross multiply
    13,579.65x = 18,739.40 × 7,914.69
  4. Step 4: Simplify right side
    13,579.65x = 148,316,502.21
  5. Step 5: Solve for x
    x = 148,316,502.21/13,579.65
  6. Step 6: Final answer
    x = 10,921.97

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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.