Home / 10,917.47-16,376.15-3,126.28

Finding the Fourth Proportional to 10,917.47, 16,376.15 and 3,126.28

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Solution

The fourth proportional to 10,917.47, 16,376.15 and 3,126.28 is: 4,689.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,917.47 : 16,376.15 = 3,126.28 : x
  2. Step 2: Convert to fraction form
    10,917.47/16,376.15 = 3,126.28/x
  3. Step 3: Cross multiply
    10,917.47x = 16,376.15 × 3,126.28
  4. Step 4: Simplify right side
    10,917.47x = 51,196,430.22
  5. Step 5: Solve for x
    x = 51,196,430.22/10,917.47
  6. Step 6: Final answer
    x = 4,689.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.