Home / 22,590.09-31,171.77-12,515.99

Finding the Fourth Proportional to 22,590.09, 31,171.77 and 12,515.99

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Solution

The fourth proportional to 22,590.09, 31,171.77 and 12,515.99 is: 17,270.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,590.09 : 31,171.77 = 12,515.99 : x
  2. Step 2: Convert to fraction form
    22,590.09/31,171.77 = 12,515.99/x
  3. Step 3: Cross multiply
    22,590.09x = 31,171.77 × 12,515.99
  4. Step 4: Simplify right side
    22,590.09x = 390,145,405.74
  5. Step 5: Solve for x
    x = 390,145,405.74/22,590.09
  6. Step 6: Final answer
    x = 17,270.64

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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.