Home / 15,499.13-21,445.09-13,513.82

Finding the Fourth Proportional to 15,499.13, 21,445.09 and 13,513.82

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Solution

The fourth proportional to 15,499.13, 21,445.09 and 13,513.82 is: 18,698.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,499.13 : 21,445.09 = 13,513.82 : x
  2. Step 2: Convert to fraction form
    15,499.13/21,445.09 = 13,513.82/x
  3. Step 3: Cross multiply
    15,499.13x = 21,445.09 × 13,513.82
  4. Step 4: Simplify right side
    15,499.13x = 289,804,945.13
  5. Step 5: Solve for x
    x = 289,804,945.13/15,499.13
  6. Step 6: Final answer
    x = 18,698.15

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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.