Home / 20,580.40-30,886.22-13,558.02

Finding the Fourth Proportional to 20,580.40, 30,886.22 and 13,558.02

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Solution

The fourth proportional to 20,580.40, 30,886.22 and 13,558.02 is: 20,347.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580.40 : 30,886.22 = 13,558.02 : x
  2. Step 2: Convert to fraction form
    20,580.40/30,886.22 = 13,558.02/x
  3. Step 3: Cross multiply
    20,580.40x = 30,886.22 × 13,558.02
  4. Step 4: Simplify right side
    20,580.40x = 418,755,988.48
  5. Step 5: Solve for x
    x = 418,755,988.48/20,580.40
  6. Step 6: Final answer
    x = 20,347.32

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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.