Home / 25,421.60-38,139.60-7,893.20

Finding the Fourth Proportional to 25,421.60, 38,139.60 and 7,893.20

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Solution

The fourth proportional to 25,421.60, 38,139.60 and 7,893.20 is: 11,842.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,421.60 : 38,139.60 = 7,893.20 : x
  2. Step 2: Convert to fraction form
    25,421.60/38,139.60 = 7,893.20/x
  3. Step 3: Cross multiply
    25,421.60x = 38,139.60 × 7,893.20
  4. Step 4: Simplify right side
    25,421.60x = 301,043,490.72
  5. Step 5: Solve for x
    x = 301,043,490.72/25,421.60
  6. Step 6: Final answer
    x = 11,842.04

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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.