Home / 10,913.36-15,069.32-8,897.09

Finding the Fourth Proportional to 10,913.36, 15,069.32 and 8,897.09

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Solution

The fourth proportional to 10,913.36, 15,069.32 and 8,897.09 is: 12,285.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,913.36 : 15,069.32 = 8,897.09 : x
  2. Step 2: Convert to fraction form
    10,913.36/15,069.32 = 8,897.09/x
  3. Step 3: Cross multiply
    10,913.36x = 15,069.32 × 8,897.09
  4. Step 4: Simplify right side
    10,913.36x = 134,072,976.45
  5. Step 5: Solve for x
    x = 134,072,976.45/10,913.36
  6. Step 6: Final answer
    x = 12,285.22

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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.