Home / 17,109.60-25,664.40-13,999.20

Finding the Fourth Proportional to 17,109.60, 25,664.40 and 13,999.20

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Solution

The fourth proportional to 17,109.60, 25,664.40 and 13,999.20 is: 20,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,109.60 : 25,664.40 = 13,999.20 : x
  2. Step 2: Convert to fraction form
    17,109.60/25,664.40 = 13,999.20/x
  3. Step 3: Cross multiply
    17,109.60x = 25,664.40 × 13,999.20
  4. Step 4: Simplify right side
    17,109.60x = 359,281,068.48
  5. Step 5: Solve for x
    x = 359,281,068.48/17,109.60
  6. Step 6: Final answer
    x = 20,998.80

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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.