Home / 21,305.84-29,403.52-11,875.92

Finding the Fourth Proportional to 21,305.84, 29,403.52 and 11,875.92

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Solution

The fourth proportional to 21,305.84, 29,403.52 and 11,875.92 is: 16,389.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305.84 : 29,403.52 = 11,875.92 : x
  2. Step 2: Convert to fraction form
    21,305.84/29,403.52 = 11,875.92/x
  3. Step 3: Cross multiply
    21,305.84x = 29,403.52 × 11,875.92
  4. Step 4: Simplify right side
    21,305.84x = 349,193,851.24
  5. Step 5: Solve for x
    x = 349,193,851.24/21,305.84
  6. Step 6: Final answer
    x = 16,389.58

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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.