Home / 31,510.11-47,284.87-12,790.14

Finding the Fourth Proportional to 31,510.11, 47,284.87 and 12,790.14

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Solution

The fourth proportional to 31,510.11, 47,284.87 and 12,790.14 is: 19,193.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,510.11 : 47,284.87 = 12,790.14 : x
  2. Step 2: Convert to fraction form
    31,510.11/47,284.87 = 12,790.14/x
  3. Step 3: Cross multiply
    31,510.11x = 47,284.87 × 12,790.14
  4. Step 4: Simplify right side
    31,510.11x = 604,780,107.18
  5. Step 5: Solve for x
    x = 604,780,107.18/31,510.11
  6. Step 6: Final answer
    x = 19,193.21

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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.