Home / 14,421.36-19,891.80-11,287.92

Finding the Fourth Proportional to 14,421.36, 19,891.80 and 11,287.92

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Solution

The fourth proportional to 14,421.36, 19,891.80 and 11,287.92 is: 15,569.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,421.36 : 19,891.80 = 11,287.92 : x
  2. Step 2: Convert to fraction form
    14,421.36/19,891.80 = 11,287.92/x
  3. Step 3: Cross multiply
    14,421.36x = 19,891.80 × 11,287.92
  4. Step 4: Simplify right side
    14,421.36x = 224,537,047.06
  5. Step 5: Solve for x
    x = 224,537,047.06/14,421.36
  6. Step 6: Final answer
    x = 15,569.76

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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.