Home / 15,443.56-21,314.40-9,778.84

Finding the Fourth Proportional to 15,443.56, 21,314.40 and 9,778.84

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Solution

The fourth proportional to 15,443.56, 21,314.40 and 9,778.84 is: 13,496.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,443.56 : 21,314.40 = 9,778.84 : x
  2. Step 2: Convert to fraction form
    15,443.56/21,314.40 = 9,778.84/x
  3. Step 3: Cross multiply
    15,443.56x = 21,314.40 × 9,778.84
  4. Step 4: Simplify right side
    15,443.56x = 208,430,107.30
  5. Step 5: Solve for x
    x = 208,430,107.30/15,443.56
  6. Step 6: Final answer
    x = 13,496.25

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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.