Home / 13,656.29-20,486.72-6,648.77

Finding the Fourth Proportional to 13,656.29, 20,486.72 and 6,648.77

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Solution

The fourth proportional to 13,656.29, 20,486.72 and 6,648.77 is: 9,974.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.29 : 20,486.72 = 6,648.77 : x
  2. Step 2: Convert to fraction form
    13,656.29/20,486.72 = 6,648.77/x
  3. Step 3: Cross multiply
    13,656.29x = 20,486.72 × 6,648.77
  4. Step 4: Simplify right side
    13,656.29x = 136,211,557.17
  5. Step 5: Solve for x
    x = 136,211,557.17/13,656.29
  6. Step 6: Final answer
    x = 9,974.28

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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.