Home / 15,286.49-21,095.59-8,480.47

Finding the Fourth Proportional to 15,286.49, 21,095.59 and 8,480.47

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Solution

The fourth proportional to 15,286.49, 21,095.59 and 8,480.47 is: 11,703.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,286.49 : 21,095.59 = 8,480.47 : x
  2. Step 2: Convert to fraction form
    15,286.49/21,095.59 = 8,480.47/x
  3. Step 3: Cross multiply
    15,286.49x = 21,095.59 × 8,480.47
  4. Step 4: Simplify right side
    15,286.49x = 178,900,412.65
  5. Step 5: Solve for x
    x = 178,900,412.65/15,286.49
  6. Step 6: Final answer
    x = 11,703.17

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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.