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Finding the Fourth Proportional to 26,668.40, 39,973.84 and 13,521.84

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Solution

The fourth proportional to 26,668.40, 39,973.84 and 13,521.84 is: 20,268.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,668.40 : 39,973.84 = 13,521.84 : x
  2. Step 2: Convert to fraction form
    26,668.40/39,973.84 = 13,521.84/x
  3. Step 3: Cross multiply
    26,668.40x = 39,973.84 × 13,521.84
  4. Step 4: Simplify right side
    26,668.40x = 540,519,868.67
  5. Step 5: Solve for x
    x = 540,519,868.67/26,668.40
  6. Step 6: Final answer
    x = 20,268.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.