Home / 31,143.55-46,729.91-13,611.10

Finding the Fourth Proportional to 31,143.55, 46,729.91 and 13,611.10

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Solution

The fourth proportional to 31,143.55, 46,729.91 and 13,611.10 is: 20,423.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,143.55 : 46,729.91 = 13,611.10 : x
  2. Step 2: Convert to fraction form
    31,143.55/46,729.91 = 13,611.10/x
  3. Step 3: Cross multiply
    31,143.55x = 46,729.91 × 13,611.10
  4. Step 4: Simplify right side
    31,143.55x = 636,045,409.95
  5. Step 5: Solve for x
    x = 636,045,409.95/31,143.55
  6. Step 6: Final answer
    x = 20,423.02

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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.