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Finding the Fourth Proportional to 18,973.92, 28,465.44 and 13,437.96

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Solution

The fourth proportional to 18,973.92, 28,465.44 and 13,437.96 is: 20,160.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,973.92 : 28,465.44 = 13,437.96 : x
  2. Step 2: Convert to fraction form
    18,973.92/28,465.44 = 13,437.96/x
  3. Step 3: Cross multiply
    18,973.92x = 28,465.44 × 13,437.96
  4. Step 4: Simplify right side
    18,973.92x = 382,517,444.10
  5. Step 5: Solve for x
    x = 382,517,444.10/18,973.92
  6. Step 6: Final answer
    x = 20,160.17

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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.