Home / 13,829.34-19,083.60-9,120

Finding the Fourth Proportional to 13,829.34, 19,083.60 and 9,120

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Solution

The fourth proportional to 13,829.34, 19,083.60 and 9,120 is: 12,585.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,829.34 : 19,083.60 = 9,120 : x
  2. Step 2: Convert to fraction form
    13,829.34/19,083.60 = 9,120/x
  3. Step 3: Cross multiply
    13,829.34x = 19,083.60 × 9,120
  4. Step 4: Simplify right side
    13,829.34x = 174,042,432
  5. Step 5: Solve for x
    x = 174,042,432/13,829.34
  6. Step 6: Final answer
    x = 12,585.01

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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.