Home / 13,381.90-18,465.50-7,412.08

Finding the Fourth Proportional to 13,381.90, 18,465.50 and 7,412.08

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Solution

The fourth proportional to 13,381.90, 18,465.50 and 7,412.08 is: 10,227.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.90 : 18,465.50 = 7,412.08 : x
  2. Step 2: Convert to fraction form
    13,381.90/18,465.50 = 7,412.08/x
  3. Step 3: Cross multiply
    13,381.90x = 18,465.50 × 7,412.08
  4. Step 4: Simplify right side
    13,381.90x = 136,867,763.24
  5. Step 5: Solve for x
    x = 136,867,763.24/13,381.90
  6. Step 6: Final answer
    x = 10,227.83

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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.