Home / 21,368.76-29,488.78-11,809.32

Finding the Fourth Proportional to 21,368.76, 29,488.78 and 11,809.32

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Solution

The fourth proportional to 21,368.76, 29,488.78 and 11,809.32 is: 16,296.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,368.76 : 29,488.78 = 11,809.32 : x
  2. Step 2: Convert to fraction form
    21,368.76/29,488.78 = 11,809.32/x
  3. Step 3: Cross multiply
    21,368.76x = 29,488.78 × 11,809.32
  4. Step 4: Simplify right side
    21,368.76x = 348,242,343.61
  5. Step 5: Solve for x
    x = 348,242,343.61/21,368.76
  6. Step 6: Final answer
    x = 16,296.80

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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.