Home / 15,862.48-21,845.82-15,518.10

Finding the Fourth Proportional to 15,862.48, 21,845.82 and 15,518.10

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Solution

The fourth proportional to 15,862.48, 21,845.82 and 15,518.10 is: 21,371.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,862.48 : 21,845.82 = 15,518.10 : x
  2. Step 2: Convert to fraction form
    15,862.48/21,845.82 = 15,518.10/x
  3. Step 3: Cross multiply
    15,862.48x = 21,845.82 × 15,518.10
  4. Step 4: Simplify right side
    15,862.48x = 339,005,619.34
  5. Step 5: Solve for x
    x = 339,005,619.34/15,862.48
  6. Step 6: Final answer
    x = 21,371.54

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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.