Home / 21,438.01-29,585.34-12,006.64

Finding the Fourth Proportional to 21,438.01, 29,585.34 and 12,006.64

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Solution

The fourth proportional to 21,438.01, 29,585.34 and 12,006.64 is: 16,569.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.01 : 29,585.34 = 12,006.64 : x
  2. Step 2: Convert to fraction form
    21,438.01/29,585.34 = 12,006.64/x
  3. Step 3: Cross multiply
    21,438.01x = 29,585.34 × 12,006.64
  4. Step 4: Simplify right side
    21,438.01x = 355,220,318.70
  5. Step 5: Solve for x
    x = 355,220,318.70/21,438.01
  6. Step 6: Final answer
    x = 16,569.65

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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.