Home / 10,980.36-15,156.32-6,267.78

Finding the Fourth Proportional to 10,980.36, 15,156.32 and 6,267.78

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Solution

The fourth proportional to 10,980.36, 15,156.32 and 6,267.78 is: 8,651.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,980.36 : 15,156.32 = 6,267.78 : x
  2. Step 2: Convert to fraction form
    10,980.36/15,156.32 = 6,267.78/x
  3. Step 3: Cross multiply
    10,980.36x = 15,156.32 × 6,267.78
  4. Step 4: Simplify right side
    10,980.36x = 94,996,448.03
  5. Step 5: Solve for x
    x = 94,996,448.03/10,980.36
  6. Step 6: Final answer
    x = 8,651.49

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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.