Home / 18,864.64-26,036.80-12,491.36

Finding the Fourth Proportional to 18,864.64, 26,036.80 and 12,491.36

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Solution

The fourth proportional to 18,864.64, 26,036.80 and 12,491.36 is: 17,240.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,864.64 : 26,036.80 = 12,491.36 : x
  2. Step 2: Convert to fraction form
    18,864.64/26,036.80 = 12,491.36/x
  3. Step 3: Cross multiply
    18,864.64x = 26,036.80 × 12,491.36
  4. Step 4: Simplify right side
    18,864.64x = 325,235,042.05
  5. Step 5: Solve for x
    x = 325,235,042.05/18,864.64
  6. Step 6: Final answer
    x = 17,240.46

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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.