Home / 21,319.32-29,424.44-13,368.36

Finding the Fourth Proportional to 21,319.32, 29,424.44 and 13,368.36

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Solution

The fourth proportional to 21,319.32, 29,424.44 and 13,368.36 is: 18,450.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,319.32 : 29,424.44 = 13,368.36 : x
  2. Step 2: Convert to fraction form
    21,319.32/29,424.44 = 13,368.36/x
  3. Step 3: Cross multiply
    21,319.32x = 29,424.44 × 13,368.36
  4. Step 4: Simplify right side
    21,319.32x = 393,356,506.72
  5. Step 5: Solve for x
    x = 393,356,506.72/21,319.32
  6. Step 6: Final answer
    x = 18,450.71

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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.