Home / 22,540.09-31,130.86-15,357.55

Finding the Fourth Proportional to 22,540.09, 31,130.86 and 15,357.55

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Solution

The fourth proportional to 22,540.09, 31,130.86 and 15,357.55 is: 21,210.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,540.09 : 31,130.86 = 15,357.55 : x
  2. Step 2: Convert to fraction form
    22,540.09/31,130.86 = 15,357.55/x
  3. Step 3: Cross multiply
    22,540.09x = 31,130.86 × 15,357.55
  4. Step 4: Simplify right side
    22,540.09x = 478,093,738.99
  5. Step 5: Solve for x
    x = 478,093,738.99/22,540.09
  6. Step 6: Final answer
    x = 21,210.82

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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.