Home / 13,774.78-20,663.64-4,411.45

Finding the Fourth Proportional to 13,774.78, 20,663.64 and 4,411.45

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Solution

The fourth proportional to 13,774.78, 20,663.64 and 4,411.45 is: 6,617.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,774.78 : 20,663.64 = 4,411.45 : x
  2. Step 2: Convert to fraction form
    13,774.78/20,663.64 = 4,411.45/x
  3. Step 3: Cross multiply
    13,774.78x = 20,663.64 × 4,411.45
  4. Step 4: Simplify right side
    13,774.78x = 91,156,640.51
  5. Step 5: Solve for x
    x = 91,156,640.51/13,774.78
  6. Step 6: Final answer
    x = 6,617.65

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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.