Home / 19,640.08-27,103.88-10,688.16

Finding the Fourth Proportional to 19,640.08, 27,103.88 and 10,688.16

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Solution

The fourth proportional to 19,640.08, 27,103.88 and 10,688.16 is: 14,749.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,640.08 : 27,103.88 = 10,688.16 : x
  2. Step 2: Convert to fraction form
    19,640.08/27,103.88 = 10,688.16/x
  3. Step 3: Cross multiply
    19,640.08x = 27,103.88 × 10,688.16
  4. Step 4: Simplify right side
    19,640.08x = 289,690,434.04
  5. Step 5: Solve for x
    x = 289,690,434.04/19,640.08
  6. Step 6: Final answer
    x = 14,749.97

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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.