Home / 21,666.64-29,900.16-12,714.29

Finding the Fourth Proportional to 21,666.64, 29,900.16 and 12,714.29

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Solution

The fourth proportional to 21,666.64, 29,900.16 and 12,714.29 is: 17,545.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,666.64 : 29,900.16 = 12,714.29 : x
  2. Step 2: Convert to fraction form
    21,666.64/29,900.16 = 12,714.29/x
  3. Step 3: Cross multiply
    21,666.64x = 29,900.16 × 12,714.29
  4. Step 4: Simplify right side
    21,666.64x = 380,159,305.29
  5. Step 5: Solve for x
    x = 380,159,305.29/21,666.64
  6. Step 6: Final answer
    x = 17,545.84

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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.