Home / 27,688.37-38,209.73-15,113.12

Finding the Fourth Proportional to 27,688.37, 38,209.73 and 15,113.12

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Solution

The fourth proportional to 27,688.37, 38,209.73 and 15,113.12 is: 20,855.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,688.37 : 38,209.73 = 15,113.12 : x
  2. Step 2: Convert to fraction form
    27,688.37/38,209.73 = 15,113.12/x
  3. Step 3: Cross multiply
    27,688.37x = 38,209.73 × 15,113.12
  4. Step 4: Simplify right side
    27,688.37x = 577,467,968.04
  5. Step 5: Solve for x
    x = 577,467,968.04/27,688.37
  6. Step 6: Final answer
    x = 20,855.98

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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.