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Finding the Fourth Proportional to 18,667.77, 28,002.47 and 8,681.89

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Solution

The fourth proportional to 18,667.77, 28,002.47 and 8,681.89 is: 13,023.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,667.77 : 28,002.47 = 8,681.89 : x
  2. Step 2: Convert to fraction form
    18,667.77/28,002.47 = 8,681.89/x
  3. Step 3: Cross multiply
    18,667.77x = 28,002.47 × 8,681.89
  4. Step 4: Simplify right side
    18,667.77x = 243,114,364.27
  5. Step 5: Solve for x
    x = 243,114,364.27/18,667.77
  6. Step 6: Final answer
    x = 13,023.21

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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.