Home / 10,917.40-16,384.20-7,214.08

Finding the Fourth Proportional to 10,917.40, 16,384.20 and 7,214.08

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Solution

The fourth proportional to 10,917.40, 16,384.20 and 7,214.08 is: 10,826.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,917.40 : 16,384.20 = 7,214.08 : x
  2. Step 2: Convert to fraction form
    10,917.40/16,384.20 = 7,214.08/x
  3. Step 3: Cross multiply
    10,917.40x = 16,384.20 × 7,214.08
  4. Step 4: Simplify right side
    10,917.40x = 118,196,929.54
  5. Step 5: Solve for x
    x = 118,196,929.54/10,917.40
  6. Step 6: Final answer
    x = 10,826.47

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1.5x scale

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.