Home / 15,801.24-21,805.72-8,631.26

Finding the Fourth Proportional to 15,801.24, 21,805.72 and 8,631.26

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Solution

The fourth proportional to 15,801.24, 21,805.72 and 8,631.26 is: 11,911.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,801.24 : 21,805.72 = 8,631.26 : x
  2. Step 2: Convert to fraction form
    15,801.24/21,805.72 = 8,631.26/x
  3. Step 3: Cross multiply
    15,801.24x = 21,805.72 × 8,631.26
  4. Step 4: Simplify right side
    15,801.24x = 188,210,838.81
  5. Step 5: Solve for x
    x = 188,210,838.81/15,801.24
  6. Step 6: Final answer
    x = 11,911.14

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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.