Home / 15,504.13-21,386.12-13,519.43

Finding the Fourth Proportional to 15,504.13, 21,386.12 and 13,519.43

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Solution

The fourth proportional to 15,504.13, 21,386.12 and 13,519.43 is: 18,648.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,504.13 : 21,386.12 = 13,519.43 : x
  2. Step 2: Convert to fraction form
    15,504.13/21,386.12 = 13,519.43/x
  3. Step 3: Cross multiply
    15,504.13x = 21,386.12 × 13,519.43
  4. Step 4: Simplify right side
    15,504.13x = 289,128,152.31
  5. Step 5: Solve for x
    x = 289,128,152.31/15,504.13
  6. Step 6: Final answer
    x = 18,648.46

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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.