Home / 27,829.11-38,406.06-15,725.40

Finding the Fourth Proportional to 27,829.11, 38,406.06 and 15,725.40

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Solution

The fourth proportional to 27,829.11, 38,406.06 and 15,725.40 is: 21,702.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,829.11 : 38,406.06 = 15,725.40 : x
  2. Step 2: Convert to fraction form
    27,829.11/38,406.06 = 15,725.40/x
  3. Step 3: Cross multiply
    27,829.11x = 38,406.06 × 15,725.40
  4. Step 4: Simplify right side
    27,829.11x = 603,950,655.92
  5. Step 5: Solve for x
    x = 603,950,655.92/27,829.11
  6. Step 6: Final answer
    x = 21,702.12

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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.