Home / 10,389.63-15,639.96-9,318

Finding the Fourth Proportional to 10,389.63, 15,639.96 and 9,318

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Solution

The fourth proportional to 10,389.63, 15,639.96 and 9,318 is: 14,026.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,389.63 : 15,639.96 = 9,318 : x
  2. Step 2: Convert to fraction form
    10,389.63/15,639.96 = 9,318/x
  3. Step 3: Cross multiply
    10,389.63x = 15,639.96 × 9,318
  4. Step 4: Simplify right side
    10,389.63x = 145,733,147.28
  5. Step 5: Solve for x
    x = 145,733,147.28/10,389.63
  6. Step 6: Final answer
    x = 14,026.79

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.