Home / 13,609.51-20,415.55-5,290.16

Finding the Fourth Proportional to 13,609.51, 20,415.55 and 5,290.16

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Solution

The fourth proportional to 13,609.51, 20,415.55 and 5,290.16 is: 7,935.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,609.51 : 20,415.55 = 5,290.16 : x
  2. Step 2: Convert to fraction form
    13,609.51/20,415.55 = 5,290.16/x
  3. Step 3: Cross multiply
    13,609.51x = 20,415.55 × 5,290.16
  4. Step 4: Simplify right side
    13,609.51x = 108,001,563.80
  5. Step 5: Solve for x
    x = 108,001,563.80/13,609.51
  6. Step 6: Final answer
    x = 7,935.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.