Home / 19,561.32-26,984.61-12,480.30

Finding the Fourth Proportional to 19,561.32, 26,984.61 and 12,480.30

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Solution

The fourth proportional to 19,561.32, 26,984.61 and 12,480.30 is: 17,216.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,561.32 : 26,984.61 = 12,480.30 : x
  2. Step 2: Convert to fraction form
    19,561.32/26,984.61 = 12,480.30/x
  3. Step 3: Cross multiply
    19,561.32x = 26,984.61 × 12,480.30
  4. Step 4: Simplify right side
    19,561.32x = 336,776,028.18
  5. Step 5: Solve for x
    x = 336,776,028.18/19,561.32
  6. Step 6: Final answer
    x = 17,216.43

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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.