Home / 21,785.16-30,063.48-13,287.24

Finding the Fourth Proportional to 21,785.16, 30,063.48 and 13,287.24

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Solution

The fourth proportional to 21,785.16, 30,063.48 and 13,287.24 is: 18,336.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,785.16 : 30,063.48 = 13,287.24 : x
  2. Step 2: Convert to fraction form
    21,785.16/30,063.48 = 13,287.24/x
  3. Step 3: Cross multiply
    21,785.16x = 30,063.48 × 13,287.24
  4. Step 4: Simplify right side
    21,785.16x = 399,460,674.00
  5. Step 5: Solve for x
    x = 399,460,674.00/21,785.16
  6. Step 6: Final answer
    x = 18,336.37

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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.