Home / 28,448.11-42,667.30-7,666.75

Finding the Fourth Proportional to 28,448.11, 42,667.30 and 7,666.75

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Solution

The fourth proportional to 28,448.11, 42,667.30 and 7,666.75 is: 11,498.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,448.11 : 42,667.30 = 7,666.75 : x
  2. Step 2: Convert to fraction form
    28,448.11/42,667.30 = 7,666.75/x
  3. Step 3: Cross multiply
    28,448.11x = 42,667.30 × 7,666.75
  4. Step 4: Simplify right side
    28,448.11x = 327,119,522.28
  5. Step 5: Solve for x
    x = 327,119,522.28/28,448.11
  6. Step 6: Final answer
    x = 11,498.81

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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.