Home / 21,308.43-29,406.02-11,875.98

Finding the Fourth Proportional to 21,308.43, 29,406.02 and 11,875.98

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Solution

The fourth proportional to 21,308.43, 29,406.02 and 11,875.98 is: 16,389.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.43 : 29,406.02 = 11,875.98 : x
  2. Step 2: Convert to fraction form
    21,308.43/29,406.02 = 11,875.98/x
  3. Step 3: Cross multiply
    21,308.43x = 29,406.02 × 11,875.98
  4. Step 4: Simplify right side
    21,308.43x = 349,225,305.40
  5. Step 5: Solve for x
    x = 349,225,305.40/21,308.43
  6. Step 6: Final answer
    x = 16,389.07

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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.