Home / 18,865.29-26,036.36-11,315.78

Finding the Fourth Proportional to 18,865.29, 26,036.36 and 11,315.78

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Solution

The fourth proportional to 18,865.29, 26,036.36 and 11,315.78 is: 15,617.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,865.29 : 26,036.36 = 11,315.78 : x
  2. Step 2: Convert to fraction form
    18,865.29/26,036.36 = 11,315.78/x
  3. Step 3: Cross multiply
    18,865.29x = 26,036.36 × 11,315.78
  4. Step 4: Simplify right side
    18,865.29x = 294,621,535.00
  5. Step 5: Solve for x
    x = 294,621,535.00/18,865.29
  6. Step 6: Final answer
    x = 15,617.12

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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.