Home / 13,845.50-20,776.89-5,637.50

Finding the Fourth Proportional to 13,845.50, 20,776.89 and 5,637.50

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Solution

The fourth proportional to 13,845.50, 20,776.89 and 5,637.50 is: 8,459.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,845.50 : 20,776.89 = 5,637.50 : x
  2. Step 2: Convert to fraction form
    13,845.50/20,776.89 = 5,637.50/x
  3. Step 3: Cross multiply
    13,845.50x = 20,776.89 × 5,637.50
  4. Step 4: Simplify right side
    13,845.50x = 117,129,717.38
  5. Step 5: Solve for x
    x = 117,129,717.38/13,845.50
  6. Step 6: Final answer
    x = 8,459.77

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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.