Home / 9,903.40-13,664.90-6,365.80

Finding the Fourth Proportional to 9,903.40, 13,664.90 and 6,365.80

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Solution

The fourth proportional to 9,903.40, 13,664.90 and 6,365.80 is: 8,783.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,903.40 : 13,664.90 = 6,365.80 : x
  2. Step 2: Convert to fraction form
    9,903.40/13,664.90 = 6,365.80/x
  3. Step 3: Cross multiply
    9,903.40x = 13,664.90 × 6,365.80
  4. Step 4: Simplify right side
    9,903.40x = 86,988,020.42
  5. Step 5: Solve for x
    x = 86,988,020.42/9,903.40
  6. Step 6: Final answer
    x = 8,783.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.