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Finding the Fourth Proportional to 28,228.59, 38,973.84 and 19,272.84

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Solution

The fourth proportional to 28,228.59, 38,973.84 and 19,272.84 is: 26,609.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,228.59 : 38,973.84 = 19,272.84 : x
  2. Step 2: Convert to fraction form
    28,228.59/38,973.84 = 19,272.84/x
  3. Step 3: Cross multiply
    28,228.59x = 38,973.84 × 19,272.84
  4. Step 4: Simplify right side
    28,228.59x = 751,136,582.51
  5. Step 5: Solve for x
    x = 751,136,582.51/28,228.59
  6. Step 6: Final answer
    x = 26,609.07

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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.