Home / 15,328.19-21,153.20-8,614.37

Finding the Fourth Proportional to 15,328.19, 21,153.20 and 8,614.37

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Solution

The fourth proportional to 15,328.19, 21,153.20 and 8,614.37 is: 11,887.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,328.19 : 21,153.20 = 8,614.37 : x
  2. Step 2: Convert to fraction form
    15,328.19/21,153.20 = 8,614.37/x
  3. Step 3: Cross multiply
    15,328.19x = 21,153.20 × 8,614.37
  4. Step 4: Simplify right side
    15,328.19x = 182,221,342.65
  5. Step 5: Solve for x
    x = 182,221,342.65/15,328.19
  6. Step 6: Final answer
    x = 11,887.99

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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.