Home / 28,327.40-39,070.18-18,256.84

Finding the Fourth Proportional to 28,327.40, 39,070.18 and 18,256.84

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Solution

The fourth proportional to 28,327.40, 39,070.18 and 18,256.84 is: 25,180.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,327.40 : 39,070.18 = 18,256.84 : x
  2. Step 2: Convert to fraction form
    28,327.40/39,070.18 = 18,256.84/x
  3. Step 3: Cross multiply
    28,327.40x = 39,070.18 × 18,256.84
  4. Step 4: Simplify right side
    28,327.40x = 713,298,025.03
  5. Step 5: Solve for x
    x = 713,298,025.03/28,327.40
  6. Step 6: Final answer
    x = 25,180.50

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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.