Home / 19,640.87-27,104.28-10,688.34

Finding the Fourth Proportional to 19,640.87, 27,104.28 and 10,688.34

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Solution

The fourth proportional to 19,640.87, 27,104.28 and 10,688.34 is: 14,749.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,640.87 : 27,104.28 = 10,688.34 : x
  2. Step 2: Convert to fraction form
    19,640.87/27,104.28 = 10,688.34/x
  3. Step 3: Cross multiply
    19,640.87x = 27,104.28 × 10,688.34
  4. Step 4: Simplify right side
    19,640.87x = 289,699,760.10
  5. Step 5: Solve for x
    x = 289,699,760.10/19,640.87
  6. Step 6: Final answer
    x = 14,749.84

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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.