Home / 13,319.78-19,980-4,554.63

Finding the Fourth Proportional to 13,319.78, 19,980 and 4,554.63

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Solution

The fourth proportional to 13,319.78, 19,980 and 4,554.63 is: 6,832.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.78 : 19,980 = 4,554.63 : x
  2. Step 2: Convert to fraction form
    13,319.78/19,980 = 4,554.63/x
  3. Step 3: Cross multiply
    13,319.78x = 19,980 × 4,554.63
  4. Step 4: Simplify right side
    13,319.78x = 91,001,507.40
  5. Step 5: Solve for x
    x = 91,001,507.40/13,319.78
  6. Step 6: Final answer
    x = 6,832.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.