Home / 13,641.48-18,819.74-7,895.14

Finding the Fourth Proportional to 13,641.48, 18,819.74 and 7,895.14

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Solution

The fourth proportional to 13,641.48, 18,819.74 and 7,895.14 is: 10,892.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,641.48 : 18,819.74 = 7,895.14 : x
  2. Step 2: Convert to fraction form
    13,641.48/18,819.74 = 7,895.14/x
  3. Step 3: Cross multiply
    13,641.48x = 18,819.74 × 7,895.14
  4. Step 4: Simplify right side
    13,641.48x = 148,584,454.75
  5. Step 5: Solve for x
    x = 148,584,454.75/13,641.48
  6. Step 6: Final answer
    x = 10,892.11

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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.