Home / 14,702.79-20,282.09-9,315.72

Finding the Fourth Proportional to 14,702.79, 20,282.09 and 9,315.72

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Solution

The fourth proportional to 14,702.79, 20,282.09 and 9,315.72 is: 12,850.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,702.79 : 20,282.09 = 9,315.72 : x
  2. Step 2: Convert to fraction form
    14,702.79/20,282.09 = 9,315.72/x
  3. Step 3: Cross multiply
    14,702.79x = 20,282.09 × 9,315.72
  4. Step 4: Simplify right side
    14,702.79x = 188,942,224.88
  5. Step 5: Solve for x
    x = 188,942,224.88/14,702.79
  6. Step 6: Final answer
    x = 12,850.77

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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.