Home / 21,411.07-32,123.09-15,183.12

Finding the Fourth Proportional to 21,411.07, 32,123.09 and 15,183.12

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Solution

The fourth proportional to 21,411.07, 32,123.09 and 15,183.12 is: 22,779.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,411.07 : 32,123.09 = 15,183.12 : x
  2. Step 2: Convert to fraction form
    21,411.07/32,123.09 = 15,183.12/x
  3. Step 3: Cross multiply
    21,411.07x = 32,123.09 × 15,183.12
  4. Step 4: Simplify right side
    21,411.07x = 487,728,730.24
  5. Step 5: Solve for x
    x = 487,728,730.24/21,411.07
  6. Step 6: Final answer
    x = 22,779.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.