Home / 21,303.26-29,397.91-11,871.58

Finding the Fourth Proportional to 21,303.26, 29,397.91 and 11,871.58

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Solution

The fourth proportional to 21,303.26, 29,397.91 and 11,871.58 is: 16,382.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303.26 : 29,397.91 = 11,871.58 : x
  2. Step 2: Convert to fraction form
    21,303.26/29,397.91 = 11,871.58/x
  3. Step 3: Cross multiply
    21,303.26x = 29,397.91 × 11,871.58
  4. Step 4: Simplify right side
    21,303.26x = 348,999,640.40
  5. Step 5: Solve for x
    x = 348,999,640.40/21,303.26
  6. Step 6: Final answer
    x = 16,382.45

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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.