Home / 18,729.09-25,839.95-12,358.85

Finding the Fourth Proportional to 18,729.09, 25,839.95 and 12,358.85

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Solution

The fourth proportional to 18,729.09, 25,839.95 and 12,358.85 is: 17,051.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.09 : 25,839.95 = 12,358.85 : x
  2. Step 2: Convert to fraction form
    18,729.09/25,839.95 = 12,358.85/x
  3. Step 3: Cross multiply
    18,729.09x = 25,839.95 × 12,358.85
  4. Step 4: Simplify right side
    18,729.09x = 319,351,875.06
  5. Step 5: Solve for x
    x = 319,351,875.06/18,729.09
  6. Step 6: Final answer
    x = 17,051.12

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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.