Home / 22,740.02-31,378.38-12,668

Finding the Fourth Proportional to 22,740.02, 31,378.38 and 12,668

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Solution

The fourth proportional to 22,740.02, 31,378.38 and 12,668 is: 17,480.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,740.02 : 31,378.38 = 12,668 : x
  2. Step 2: Convert to fraction form
    22,740.02/31,378.38 = 12,668/x
  3. Step 3: Cross multiply
    22,740.02x = 31,378.38 × 12,668
  4. Step 4: Simplify right side
    22,740.02x = 397,501,317.84
  5. Step 5: Solve for x
    x = 397,501,317.84/22,740.02
  6. Step 6: Final answer
    x = 17,480.25

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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.