Home / 21,315.32-29,414.04-11,883.68

Finding the Fourth Proportional to 21,315.32, 29,414.04 and 11,883.68

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Solution

The fourth proportional to 21,315.32, 29,414.04 and 11,883.68 is: 16,398.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,315.32 : 29,414.04 = 11,883.68 : x
  2. Step 2: Convert to fraction form
    21,315.32/29,414.04 = 11,883.68/x
  3. Step 3: Cross multiply
    21,315.32x = 29,414.04 × 11,883.68
  4. Step 4: Simplify right side
    21,315.32x = 349,547,038.87
  5. Step 5: Solve for x
    x = 349,547,038.87/21,315.32
  6. Step 6: Final answer
    x = 16,398.86

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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.