Home / 28,371.36-39,177.12-17,779.20

Finding the Fourth Proportional to 28,371.36, 39,177.12 and 17,779.20

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Solution

The fourth proportional to 28,371.36, 39,177.12 and 17,779.20 is: 24,550.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,371.36 : 39,177.12 = 17,779.20 : x
  2. Step 2: Convert to fraction form
    28,371.36/39,177.12 = 17,779.20/x
  3. Step 3: Cross multiply
    28,371.36x = 39,177.12 × 17,779.20
  4. Step 4: Simplify right side
    28,371.36x = 696,537,851.90
  5. Step 5: Solve for x
    x = 696,537,851.90/28,371.36
  6. Step 6: Final answer
    x = 24,550.74

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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.