Home / 15,435.04-21,299.09-8,721.25

Finding the Fourth Proportional to 15,435.04, 21,299.09 and 8,721.25

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Solution

The fourth proportional to 15,435.04, 21,299.09 and 8,721.25 is: 12,034.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,435.04 : 21,299.09 = 8,721.25 : x
  2. Step 2: Convert to fraction form
    15,435.04/21,299.09 = 8,721.25/x
  3. Step 3: Cross multiply
    15,435.04x = 21,299.09 × 8,721.25
  4. Step 4: Simplify right side
    15,435.04x = 185,754,688.66
  5. Step 5: Solve for x
    x = 185,754,688.66/15,435.04
  6. Step 6: Final answer
    x = 12,034.61

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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.