Home / 9,905.24-13,669.33-5,428.89

Finding the Fourth Proportional to 9,905.24, 13,669.33 and 5,428.89

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Solution

The fourth proportional to 9,905.24, 13,669.33 and 5,428.89 is: 7,491.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,905.24 : 13,669.33 = 5,428.89 : x
  2. Step 2: Convert to fraction form
    9,905.24/13,669.33 = 5,428.89/x
  3. Step 3: Cross multiply
    9,905.24x = 13,669.33 × 5,428.89
  4. Step 4: Simplify right side
    9,905.24x = 74,209,288.94
  5. Step 5: Solve for x
    x = 74,209,288.94/9,905.24
  6. Step 6: Final answer
    x = 7,491.93

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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.