Home / 13,507.80-18,637.18-8,664.20

Finding the Fourth Proportional to 13,507.80, 18,637.18 and 8,664.20

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Solution

The fourth proportional to 13,507.80, 18,637.18 and 8,664.20 is: 11,954.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,507.80 : 18,637.18 = 8,664.20 : x
  2. Step 2: Convert to fraction form
    13,507.80/18,637.18 = 8,664.20/x
  3. Step 3: Cross multiply
    13,507.80x = 18,637.18 × 8,664.20
  4. Step 4: Simplify right side
    13,507.80x = 161,476,254.96
  5. Step 5: Solve for x
    x = 161,476,254.96/13,507.80
  6. Step 6: Final answer
    x = 11,954.30

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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.