Home / 15,381.99-21,227.16-8,308.41

Finding the Fourth Proportional to 15,381.99, 21,227.16 and 8,308.41

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Solution

The fourth proportional to 15,381.99, 21,227.16 and 8,308.41 is: 11,465.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,381.99 : 21,227.16 = 8,308.41 : x
  2. Step 2: Convert to fraction form
    15,381.99/21,227.16 = 8,308.41/x
  3. Step 3: Cross multiply
    15,381.99x = 21,227.16 × 8,308.41
  4. Step 4: Simplify right side
    15,381.99x = 176,363,988.22
  5. Step 5: Solve for x
    x = 176,363,988.22/15,381.99
  6. Step 6: Final answer
    x = 11,465.62

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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.