Home / 18,779.32-25,911.12-11,228.04

Finding the Fourth Proportional to 18,779.32, 25,911.12 and 11,228.04

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Solution

The fourth proportional to 18,779.32, 25,911.12 and 11,228.04 is: 15,492.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779.32 : 25,911.12 = 11,228.04 : x
  2. Step 2: Convert to fraction form
    18,779.32/25,911.12 = 11,228.04/x
  3. Step 3: Cross multiply
    18,779.32x = 25,911.12 × 11,228.04
  4. Step 4: Simplify right side
    18,779.32x = 290,931,091.80
  5. Step 5: Solve for x
    x = 290,931,091.80/18,779.32
  6. Step 6: Final answer
    x = 15,492.10

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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.