Home / 18,255.16-25,205.34-11,985.76

Finding the Fourth Proportional to 18,255.16, 25,205.34 and 11,985.76

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Solution

The fourth proportional to 18,255.16, 25,205.34 and 11,985.76 is: 16,549.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,255.16 : 25,205.34 = 11,985.76 : x
  2. Step 2: Convert to fraction form
    18,255.16/25,205.34 = 11,985.76/x
  3. Step 3: Cross multiply
    18,255.16x = 25,205.34 × 11,985.76
  4. Step 4: Simplify right side
    18,255.16x = 302,105,155.96
  5. Step 5: Solve for x
    x = 302,105,155.96/18,255.16
  6. Step 6: Final answer
    x = 16,549.03

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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.