Home / 9,905.68-13,669.85-5,429.45

Finding the Fourth Proportional to 9,905.68, 13,669.85 and 5,429.45

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Solution

The fourth proportional to 9,905.68, 13,669.85 and 5,429.45 is: 7,492.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,905.68 : 13,669.85 = 5,429.45 : x
  2. Step 2: Convert to fraction form
    9,905.68/13,669.85 = 5,429.45/x
  3. Step 3: Cross multiply
    9,905.68x = 13,669.85 × 5,429.45
  4. Step 4: Simplify right side
    9,905.68x = 74,219,774.11
  5. Step 5: Solve for x
    x = 74,219,774.11/9,905.68
  6. Step 6: Final answer
    x = 7,492.65

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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.