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Finding the Fourth Proportional to 18,699.02, 28,073.02 and 13,154.98

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Solution

The fourth proportional to 18,699.02, 28,073.02 and 13,154.98 is: 19,749.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,699.02 : 28,073.02 = 13,154.98 : x
  2. Step 2: Convert to fraction form
    18,699.02/28,073.02 = 13,154.98/x
  3. Step 3: Cross multiply
    18,699.02x = 28,073.02 × 13,154.98
  4. Step 4: Simplify right side
    18,699.02x = 369,300,016.64
  5. Step 5: Solve for x
    x = 369,300,016.64/18,699.02
  6. Step 6: Final answer
    x = 19,749.70

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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.