Home / 21,250.45-29,328.65-13,297.33

Finding the Fourth Proportional to 21,250.45, 29,328.65 and 13,297.33

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Solution

The fourth proportional to 21,250.45, 29,328.65 and 13,297.33 is: 18,352.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.45 : 29,328.65 = 13,297.33 : x
  2. Step 2: Convert to fraction form
    21,250.45/29,328.65 = 13,297.33/x
  3. Step 3: Cross multiply
    21,250.45x = 29,328.65 × 13,297.33
  4. Step 4: Simplify right side
    21,250.45x = 389,992,737.50
  5. Step 5: Solve for x
    x = 389,992,737.50/21,250.45
  6. Step 6: Final answer
    x = 18,352.21

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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.