Home / 28,038.60-42,078.75-13,252.05

Finding the Fourth Proportional to 28,038.60, 42,078.75 and 13,252.05

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Solution

The fourth proportional to 28,038.60, 42,078.75 and 13,252.05 is: 19,887.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,038.60 : 42,078.75 = 13,252.05 : x
  2. Step 2: Convert to fraction form
    28,038.60/42,078.75 = 13,252.05/x
  3. Step 3: Cross multiply
    28,038.60x = 42,078.75 × 13,252.05
  4. Step 4: Simplify right side
    28,038.60x = 557,629,698.94
  5. Step 5: Solve for x
    x = 557,629,698.94/28,038.60
  6. Step 6: Final answer
    x = 19,887.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.