Home / 13,890.60-20,828.34-9,513

Finding the Fourth Proportional to 13,890.60, 20,828.34 and 9,513

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Solution

The fourth proportional to 13,890.60, 20,828.34 and 9,513 is: 14,264.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.60 : 20,828.34 = 9,513 : x
  2. Step 2: Convert to fraction form
    13,890.60/20,828.34 = 9,513/x
  3. Step 3: Cross multiply
    13,890.60x = 20,828.34 × 9,513
  4. Step 4: Simplify right side
    13,890.60x = 198,139,998.42
  5. Step 5: Solve for x
    x = 198,139,998.42/13,890.60
  6. Step 6: Final answer
    x = 14,264.32

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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.