Home / 13,307.66-19,964.91-4,987.79

Finding the Fourth Proportional to 13,307.66, 19,964.91 and 4,987.79

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Solution

The fourth proportional to 13,307.66, 19,964.91 and 4,987.79 is: 7,482.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,307.66 : 19,964.91 = 4,987.79 : x
  2. Step 2: Convert to fraction form
    13,307.66/19,964.91 = 4,987.79/x
  3. Step 3: Cross multiply
    13,307.66x = 19,964.91 × 4,987.79
  4. Step 4: Simplify right side
    13,307.66x = 99,580,778.45
  5. Step 5: Solve for x
    x = 99,580,778.45/13,307.66
  6. Step 6: Final answer
    x = 7,482.97

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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.