Home / 12,780.19-17,635.24-7,113.63

Finding the Fourth Proportional to 12,780.19, 17,635.24 and 7,113.63

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Solution

The fourth proportional to 12,780.19, 17,635.24 and 7,113.63 is: 9,816.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780.19 : 17,635.24 = 7,113.63 : x
  2. Step 2: Convert to fraction form
    12,780.19/17,635.24 = 7,113.63/x
  3. Step 3: Cross multiply
    12,780.19x = 17,635.24 × 7,113.63
  4. Step 4: Simplify right side
    12,780.19x = 125,450,581.21
  5. Step 5: Solve for x
    x = 125,450,581.21/12,780.19
  6. Step 6: Final answer
    x = 9,816.02

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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.