Home / 13,689.54-20,529.28-6,667.45

Finding the Fourth Proportional to 13,689.54, 20,529.28 and 6,667.45

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Solution

The fourth proportional to 13,689.54, 20,529.28 and 6,667.45 is: 9,998.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,689.54 : 20,529.28 = 6,667.45 : x
  2. Step 2: Convert to fraction form
    13,689.54/20,529.28 = 6,667.45/x
  3. Step 3: Cross multiply
    13,689.54x = 20,529.28 × 6,667.45
  4. Step 4: Simplify right side
    13,689.54x = 136,877,904.95
  5. Step 5: Solve for x
    x = 136,877,904.95/13,689.54
  6. Step 6: Final answer
    x = 9,998.72

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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.