Home / 21,435.12-29,575.32-12,002.16

Finding the Fourth Proportional to 21,435.12, 29,575.32 and 12,002.16

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Solution

The fourth proportional to 21,435.12, 29,575.32 and 12,002.16 is: 16,560.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,435.12 : 29,575.32 = 12,002.16 : x
  2. Step 2: Convert to fraction form
    21,435.12/29,575.32 = 12,002.16/x
  3. Step 3: Cross multiply
    21,435.12x = 29,575.32 × 12,002.16
  4. Step 4: Simplify right side
    21,435.12x = 354,967,722.69
  5. Step 5: Solve for x
    x = 354,967,722.69/21,435.12
  6. Step 6: Final answer
    x = 16,560.10

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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.