Home / 22,555.68-31,128.48-13,605.36

Finding the Fourth Proportional to 22,555.68, 31,128.48 and 13,605.36

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Solution

The fourth proportional to 22,555.68, 31,128.48 and 13,605.36 is: 18,776.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,555.68 : 31,128.48 = 13,605.36 : x
  2. Step 2: Convert to fraction form
    22,555.68/31,128.48 = 13,605.36/x
  3. Step 3: Cross multiply
    22,555.68x = 31,128.48 × 13,605.36
  4. Step 4: Simplify right side
    22,555.68x = 423,514,176.65
  5. Step 5: Solve for x
    x = 423,514,176.65/22,555.68
  6. Step 6: Final answer
    x = 18,776.39

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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.