Home / 21,651.15-29,875.56-12,089.71

Finding the Fourth Proportional to 21,651.15, 29,875.56 and 12,089.71

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Solution

The fourth proportional to 21,651.15, 29,875.56 and 12,089.71 is: 16,682.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,651.15 : 29,875.56 = 12,089.71 : x
  2. Step 2: Convert to fraction form
    21,651.15/29,875.56 = 12,089.71/x
  3. Step 3: Cross multiply
    21,651.15x = 29,875.56 × 12,089.71
  4. Step 4: Simplify right side
    21,651.15x = 361,186,714.45
  5. Step 5: Solve for x
    x = 361,186,714.45/21,651.15
  6. Step 6: Final answer
    x = 16,682.10

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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.