Home / 13,829.13-19,069.11-9,345.11

Finding the Fourth Proportional to 13,829.13, 19,069.11 and 9,345.11

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Solution

The fourth proportional to 13,829.13, 19,069.11 and 9,345.11 is: 12,886.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,829.13 : 19,069.11 = 9,345.11 : x
  2. Step 2: Convert to fraction form
    13,829.13/19,069.11 = 9,345.11/x
  3. Step 3: Cross multiply
    13,829.13x = 19,069.11 × 9,345.11
  4. Step 4: Simplify right side
    13,829.13x = 178,202,835.21
  5. Step 5: Solve for x
    x = 178,202,835.21/13,829.13
  6. Step 6: Final answer
    x = 12,886.05

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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.