Home / 27,688.82-38,210.97-15,113.30

Finding the Fourth Proportional to 27,688.82, 38,210.97 and 15,113.30

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Solution

The fourth proportional to 27,688.82, 38,210.97 and 15,113.30 is: 20,856.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,688.82 : 38,210.97 = 15,113.30 : x
  2. Step 2: Convert to fraction form
    27,688.82/38,210.97 = 15,113.30/x
  3. Step 3: Cross multiply
    27,688.82x = 38,210.97 × 15,113.30
  4. Step 4: Simplify right side
    27,688.82x = 577,493,852.90
  5. Step 5: Solve for x
    x = 577,493,852.90/27,688.82
  6. Step 6: Final answer
    x = 20,856.57

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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.