Home / 15,822.56-21,835.95-9,109.16

Finding the Fourth Proportional to 15,822.56, 21,835.95 and 9,109.16

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Solution

The fourth proportional to 15,822.56, 21,835.95 and 9,109.16 is: 12,571.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,822.56 : 21,835.95 = 9,109.16 : x
  2. Step 2: Convert to fraction form
    15,822.56/21,835.95 = 9,109.16/x
  3. Step 3: Cross multiply
    15,822.56x = 21,835.95 × 9,109.16
  4. Step 4: Simplify right side
    15,822.56x = 198,907,162.30
  5. Step 5: Solve for x
    x = 198,907,162.30/15,822.56
  6. Step 6: Final answer
    x = 12,571.11

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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.