Home / 15,858.24-21,880.32-9,892.80

Finding the Fourth Proportional to 15,858.24, 21,880.32 and 9,892.80

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Solution

The fourth proportional to 15,858.24, 21,880.32 and 9,892.80 is: 13,649.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,858.24 : 21,880.32 = 9,892.80 : x
  2. Step 2: Convert to fraction form
    15,858.24/21,880.32 = 9,892.80/x
  3. Step 3: Cross multiply
    15,858.24x = 21,880.32 × 9,892.80
  4. Step 4: Simplify right side
    15,858.24x = 216,457,629.70
  5. Step 5: Solve for x
    x = 216,457,629.70/15,858.24
  6. Step 6: Final answer
    x = 13,649.54

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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.