Home / 9,905.31-13,669.32-5,429.07

Finding the Fourth Proportional to 9,905.31, 13,669.32 and 5,429.07

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Solution

The fourth proportional to 9,905.31, 13,669.32 and 5,429.07 is: 7,492.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,905.31 : 13,669.32 = 5,429.07 : x
  2. Step 2: Convert to fraction form
    9,905.31/13,669.32 = 5,429.07/x
  3. Step 3: Cross multiply
    9,905.31x = 13,669.32 × 5,429.07
  4. Step 4: Simplify right side
    9,905.31x = 74,211,695.13
  5. Step 5: Solve for x
    x = 74,211,695.13/9,905.31
  6. Step 6: Final answer
    x = 7,492.11

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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.