Home / 22,312.60-30,790.30-12,884.20

Finding the Fourth Proportional to 22,312.60, 30,790.30 and 12,884.20

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Solution

The fourth proportional to 22,312.60, 30,790.30 and 12,884.20 is: 17,779.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,312.60 : 30,790.30 = 12,884.20 : x
  2. Step 2: Convert to fraction form
    22,312.60/30,790.30 = 12,884.20/x
  3. Step 3: Cross multiply
    22,312.60x = 30,790.30 × 12,884.20
  4. Step 4: Simplify right side
    22,312.60x = 396,708,383.26
  5. Step 5: Solve for x
    x = 396,708,383.26/22,312.60
  6. Step 6: Final answer
    x = 17,779.57

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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.