Home / 21,903.38-32,878.45-9,429.58

Finding the Fourth Proportional to 21,903.38, 32,878.45 and 9,429.58

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Solution

The fourth proportional to 21,903.38, 32,878.45 and 9,429.58 is: 14,154.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,903.38 : 32,878.45 = 9,429.58 : x
  2. Step 2: Convert to fraction form
    21,903.38/32,878.45 = 9,429.58/x
  3. Step 3: Cross multiply
    21,903.38x = 32,878.45 × 9,429.58
  4. Step 4: Simplify right side
    21,903.38x = 310,029,974.55
  5. Step 5: Solve for x
    x = 310,029,974.55/21,903.38
  6. Step 6: Final answer
    x = 14,154.44

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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.