Home / 27,688.15-38,209.08-15,112.90

Finding the Fourth Proportional to 27,688.15, 38,209.08 and 15,112.90

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Solution

The fourth proportional to 27,688.15, 38,209.08 and 15,112.90 is: 20,855.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,688.15 : 38,209.08 = 15,112.90 : x
  2. Step 2: Convert to fraction form
    27,688.15/38,209.08 = 15,112.90/x
  3. Step 3: Cross multiply
    27,688.15x = 38,209.08 × 15,112.90
  4. Step 4: Simplify right side
    27,688.15x = 577,450,005.13
  5. Step 5: Solve for x
    x = 577,450,005.13/27,688.15
  6. Step 6: Final answer
    x = 20,855.49

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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.