Home / 21,323.10-31,962.40-7,278.46

Finding the Fourth Proportional to 21,323.10, 31,962.40 and 7,278.46

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Solution

The fourth proportional to 21,323.10, 31,962.40 and 7,278.46 is: 10,910.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,323.10 : 31,962.40 = 7,278.46 : x
  2. Step 2: Convert to fraction form
    21,323.10/31,962.40 = 7,278.46/x
  3. Step 3: Cross multiply
    21,323.10x = 31,962.40 × 7,278.46
  4. Step 4: Simplify right side
    21,323.10x = 232,636,951.80
  5. Step 5: Solve for x
    x = 232,636,951.80/21,323.10
  6. Step 6: Final answer
    x = 10,910.09

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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.