Home / 10,929.80-16,383.90-4,347.20

Finding the Fourth Proportional to 10,929.80, 16,383.90 and 4,347.20

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Solution

The fourth proportional to 10,929.80, 16,383.90 and 4,347.20 is: 6,516.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,929.80 : 16,383.90 = 4,347.20 : x
  2. Step 2: Convert to fraction form
    10,929.80/16,383.90 = 4,347.20/x
  3. Step 3: Cross multiply
    10,929.80x = 16,383.90 × 4,347.20
  4. Step 4: Simplify right side
    10,929.80x = 71,224,090.08
  5. Step 5: Solve for x
    x = 71,224,090.08/10,929.80
  6. Step 6: Final answer
    x = 6,516.50

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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.