Home / 21,263.96-29,343.83-13,310.57

Finding the Fourth Proportional to 21,263.96, 29,343.83 and 13,310.57

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Solution

The fourth proportional to 21,263.96, 29,343.83 and 13,310.57 is: 18,368.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,263.96 : 29,343.83 = 13,310.57 : x
  2. Step 2: Convert to fraction form
    21,263.96/29,343.83 = 13,310.57/x
  3. Step 3: Cross multiply
    21,263.96x = 29,343.83 × 13,310.57
  4. Step 4: Simplify right side
    21,263.96x = 390,583,139.87
  5. Step 5: Solve for x
    x = 390,583,139.87/21,263.96
  6. Step 6: Final answer
    x = 18,368.32

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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.