Home / 15,389.91-21,238.06-8,316.33

Finding the Fourth Proportional to 15,389.91, 21,238.06 and 8,316.33

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Solution

The fourth proportional to 15,389.91, 21,238.06 and 8,316.33 is: 11,476.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,389.91 : 21,238.06 = 8,316.33 : x
  2. Step 2: Convert to fraction form
    15,389.91/21,238.06 = 8,316.33/x
  3. Step 3: Cross multiply
    15,389.91x = 21,238.06 × 8,316.33
  4. Step 4: Simplify right side
    15,389.91x = 176,622,715.52
  5. Step 5: Solve for x
    x = 176,622,715.52/15,389.91
  6. Step 6: Final answer
    x = 11,476.53

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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.