Home / 13,569.70-20,354.80-8,919.34

Finding the Fourth Proportional to 13,569.70, 20,354.80 and 8,919.34

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Solution

The fourth proportional to 13,569.70, 20,354.80 and 8,919.34 is: 13,379.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,569.70 : 20,354.80 = 8,919.34 : x
  2. Step 2: Convert to fraction form
    13,569.70/20,354.80 = 8,919.34/x
  3. Step 3: Cross multiply
    13,569.70x = 20,354.80 × 8,919.34
  4. Step 4: Simplify right side
    13,569.70x = 181,551,381.83
  5. Step 5: Solve for x
    x = 181,551,381.83/13,569.70
  6. Step 6: Final answer
    x = 13,379.17

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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.