Home / 13,158.76-18,152.34-8,909.96

Finding the Fourth Proportional to 13,158.76, 18,152.34 and 8,909.96

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Solution

The fourth proportional to 13,158.76, 18,152.34 and 8,909.96 is: 12,291.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,158.76 : 18,152.34 = 8,909.96 : x
  2. Step 2: Convert to fraction form
    13,158.76/18,152.34 = 8,909.96/x
  3. Step 3: Cross multiply
    13,158.76x = 18,152.34 × 8,909.96
  4. Step 4: Simplify right side
    13,158.76x = 161,736,623.31
  5. Step 5: Solve for x
    x = 161,736,623.31/13,158.76
  6. Step 6: Final answer
    x = 12,291.18

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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.