Home / 28,506.12-39,328.84-18,447.28

Finding the Fourth Proportional to 28,506.12, 39,328.84 and 18,447.28

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Solution

The fourth proportional to 28,506.12, 39,328.84 and 18,447.28 is: 25,451.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,506.12 : 39,328.84 = 18,447.28 : x
  2. Step 2: Convert to fraction form
    28,506.12/39,328.84 = 18,447.28/x
  3. Step 3: Cross multiply
    28,506.12x = 39,328.84 × 18,447.28
  4. Step 4: Simplify right side
    28,506.12x = 725,510,123.56
  5. Step 5: Solve for x
    x = 725,510,123.56/28,506.12
  6. Step 6: Final answer
    x = 25,451.03

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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.