Home / 13,484.29-18,606.79-7,817.86

Finding the Fourth Proportional to 13,484.29, 18,606.79 and 7,817.86

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Solution

The fourth proportional to 13,484.29, 18,606.79 and 7,817.86 is: 10,787.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,484.29 : 18,606.79 = 7,817.86 : x
  2. Step 2: Convert to fraction form
    13,484.29/18,606.79 = 7,817.86/x
  3. Step 3: Cross multiply
    13,484.29x = 18,606.79 × 7,817.86
  4. Step 4: Simplify right side
    13,484.29x = 145,465,279.27
  5. Step 5: Solve for x
    x = 145,465,279.27/13,484.29
  6. Step 6: Final answer
    x = 10,787.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.