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Finding the Fourth Proportional to 18,973.71, 28,427.76 and 14,758.27

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Solution

The fourth proportional to 18,973.71, 28,427.76 and 14,758.27 is: 22,111.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,973.71 : 28,427.76 = 14,758.27 : x
  2. Step 2: Convert to fraction form
    18,973.71/28,427.76 = 14,758.27/x
  3. Step 3: Cross multiply
    18,973.71x = 28,427.76 × 14,758.27
  4. Step 4: Simplify right side
    18,973.71x = 419,544,486.51
  5. Step 5: Solve for x
    x = 419,544,486.51/18,973.71
  6. Step 6: Final answer
    x = 22,111.88

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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.