Home / 21,074.66-31,603.20-8,586.21

Finding the Fourth Proportional to 21,074.66, 31,603.20 and 8,586.21

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Solution

The fourth proportional to 21,074.66, 31,603.20 and 8,586.21 is: 12,875.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,074.66 : 31,603.20 = 8,586.21 : x
  2. Step 2: Convert to fraction form
    21,074.66/31,603.20 = 8,586.21/x
  3. Step 3: Cross multiply
    21,074.66x = 31,603.20 × 8,586.21
  4. Step 4: Simplify right side
    21,074.66x = 271,351,711.87
  5. Step 5: Solve for x
    x = 271,351,711.87/21,074.66
  6. Step 6: Final answer
    x = 12,875.74

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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.