Home / 10,964.56-15,129.93-6,488.50

Finding the Fourth Proportional to 10,964.56, 15,129.93 and 6,488.50

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Solution

The fourth proportional to 10,964.56, 15,129.93 and 6,488.50 is: 8,953.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,964.56 : 15,129.93 = 6,488.50 : x
  2. Step 2: Convert to fraction form
    10,964.56/15,129.93 = 6,488.50/x
  3. Step 3: Cross multiply
    10,964.56x = 15,129.93 × 6,488.50
  4. Step 4: Simplify right side
    10,964.56x = 98,170,556.19
  5. Step 5: Solve for x
    x = 98,170,556.19/10,964.56
  6. Step 6: Final answer
    x = 8,953.44

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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.