Home / 13,296.04-18,347.70-7,987.72

Finding the Fourth Proportional to 13,296.04, 18,347.70 and 7,987.72

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Solution

The fourth proportional to 13,296.04, 18,347.70 and 7,987.72 is: 11,022.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,296.04 : 18,347.70 = 7,987.72 : x
  2. Step 2: Convert to fraction form
    13,296.04/18,347.70 = 7,987.72/x
  3. Step 3: Cross multiply
    13,296.04x = 18,347.70 × 7,987.72
  4. Step 4: Simplify right side
    13,296.04x = 146,556,290.24
  5. Step 5: Solve for x
    x = 146,556,290.24/13,296.04
  6. Step 6: Final answer
    x = 11,022.55

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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.