Home / 15,158.18-20,918.34-8,786.03

Finding the Fourth Proportional to 15,158.18, 20,918.34 and 8,786.03

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Solution

The fourth proportional to 15,158.18, 20,918.34 and 8,786.03 is: 12,124.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,158.18 : 20,918.34 = 8,786.03 : x
  2. Step 2: Convert to fraction form
    15,158.18/20,918.34 = 8,786.03/x
  3. Step 3: Cross multiply
    15,158.18x = 20,918.34 × 8,786.03
  4. Step 4: Simplify right side
    15,158.18x = 183,789,058.20
  5. Step 5: Solve for x
    x = 183,789,058.20/15,158.18
  6. Step 6: Final answer
    x = 12,124.74

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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.