Home / 21,214.69-31,822.04-6,423.58

Finding the Fourth Proportional to 21,214.69, 31,822.04 and 6,423.58

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Solution

The fourth proportional to 21,214.69, 31,822.04 and 6,423.58 is: 9,635.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,214.69 : 31,822.04 = 6,423.58 : x
  2. Step 2: Convert to fraction form
    21,214.69/31,822.04 = 6,423.58/x
  3. Step 3: Cross multiply
    21,214.69x = 31,822.04 × 6,423.58
  4. Step 4: Simplify right side
    21,214.69x = 204,411,228.48
  5. Step 5: Solve for x
    x = 204,411,228.48/21,214.69
  6. Step 6: Final answer
    x = 9,635.36

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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.