Home / 15,270.65-21,074.78-8,556.17

Finding the Fourth Proportional to 15,270.65, 21,074.78 and 8,556.17

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Solution

The fourth proportional to 15,270.65, 21,074.78 and 8,556.17 is: 11,808.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,270.65 : 21,074.78 = 8,556.17 : x
  2. Step 2: Convert to fraction form
    15,270.65/21,074.78 = 8,556.17/x
  3. Step 3: Cross multiply
    15,270.65x = 21,074.78 × 8,556.17
  4. Step 4: Simplify right side
    15,270.65x = 180,319,474.47
  5. Step 5: Solve for x
    x = 180,319,474.47/15,270.65
  6. Step 6: Final answer
    x = 11,808.24

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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.