Home / 21,416.85-32,108.81-10,878.21

Finding the Fourth Proportional to 21,416.85, 32,108.81 and 10,878.21

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Solution

The fourth proportional to 21,416.85, 32,108.81 and 10,878.21 is: 16,308.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,416.85 : 32,108.81 = 10,878.21 : x
  2. Step 2: Convert to fraction form
    21,416.85/32,108.81 = 10,878.21/x
  3. Step 3: Cross multiply
    21,416.85x = 32,108.81 × 10,878.21
  4. Step 4: Simplify right side
    21,416.85x = 349,286,323.64
  5. Step 5: Solve for x
    x = 349,286,323.64/21,416.85
  6. Step 6: Final answer
    x = 16,308.95

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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.