Home / 15,208.19-21,001.74-14,379.87

Finding the Fourth Proportional to 15,208.19, 21,001.74 and 14,379.87

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Solution

The fourth proportional to 15,208.19, 21,001.74 and 14,379.87 is: 19,857.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,208.19 : 21,001.74 = 14,379.87 : x
  2. Step 2: Convert to fraction form
    15,208.19/21,001.74 = 14,379.87/x
  3. Step 3: Cross multiply
    15,208.19x = 21,001.74 × 14,379.87
  4. Step 4: Simplify right side
    15,208.19x = 302,002,290.97
  5. Step 5: Solve for x
    x = 302,002,290.97/15,208.19
  6. Step 6: Final answer
    x = 19,857.87

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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.