Home / 15,209.39-21,003.45-14,381.12

Finding the Fourth Proportional to 15,209.39, 21,003.45 and 14,381.12

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Solution

The fourth proportional to 15,209.39, 21,003.45 and 14,381.12 is: 19,859.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,209.39 : 21,003.45 = 14,381.12 : x
  2. Step 2: Convert to fraction form
    15,209.39/21,003.45 = 14,381.12/x
  3. Step 3: Cross multiply
    15,209.39x = 21,003.45 × 14,381.12
  4. Step 4: Simplify right side
    15,209.39x = 302,053,134.86
  5. Step 5: Solve for x
    x = 302,053,134.86/15,209.39
  6. Step 6: Final answer
    x = 19,859.65

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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.