Home / 9,905.37-13,669.76-5,429.13

Finding the Fourth Proportional to 9,905.37, 13,669.76 and 5,429.13

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Solution

The fourth proportional to 9,905.37, 13,669.76 and 5,429.13 is: 7,492.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,905.37 : 13,669.76 = 5,429.13 : x
  2. Step 2: Convert to fraction form
    9,905.37/13,669.76 = 5,429.13/x
  3. Step 3: Cross multiply
    9,905.37x = 13,669.76 × 5,429.13
  4. Step 4: Simplify right side
    9,905.37x = 74,214,904.11
  5. Step 5: Solve for x
    x = 74,214,904.11/9,905.37
  6. Step 6: Final answer
    x = 7,492.39

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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.