Home / 21,006.55-31,510.70-9,772.44

Finding the Fourth Proportional to 21,006.55, 31,510.70 and 9,772.44

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Solution

The fourth proportional to 21,006.55, 31,510.70 and 9,772.44 is: 14,659.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,006.55 : 31,510.70 = 9,772.44 : x
  2. Step 2: Convert to fraction form
    21,006.55/31,510.70 = 9,772.44/x
  3. Step 3: Cross multiply
    21,006.55x = 31,510.70 × 9,772.44
  4. Step 4: Simplify right side
    21,006.55x = 307,936,425.11
  5. Step 5: Solve for x
    x = 307,936,425.11/21,006.55
  6. Step 6: Final answer
    x = 14,659.07

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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.