Home / 15,118.29-20,862.84-8,830.65

Finding the Fourth Proportional to 15,118.29, 20,862.84 and 8,830.65

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Solution

The fourth proportional to 15,118.29, 20,862.84 and 8,830.65 is: 12,186.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,118.29 : 20,862.84 = 8,830.65 : x
  2. Step 2: Convert to fraction form
    15,118.29/20,862.84 = 8,830.65/x
  3. Step 3: Cross multiply
    15,118.29x = 20,862.84 × 8,830.65
  4. Step 4: Simplify right side
    15,118.29x = 184,232,438.05
  5. Step 5: Solve for x
    x = 184,232,438.05/15,118.29
  6. Step 6: Final answer
    x = 12,186.06

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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.