Home / 10,631.56-14,673.20-8,109.40

Finding the Fourth Proportional to 10,631.56, 14,673.20 and 8,109.40

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Solution

The fourth proportional to 10,631.56, 14,673.20 and 8,109.40 is: 11,192.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,631.56 : 14,673.20 = 8,109.40 : x
  2. Step 2: Convert to fraction form
    10,631.56/14,673.20 = 8,109.40/x
  3. Step 3: Cross multiply
    10,631.56x = 14,673.20 × 8,109.40
  4. Step 4: Simplify right side
    10,631.56x = 118,990,848.08
  5. Step 5: Solve for x
    x = 118,990,848.08/10,631.56
  6. Step 6: Final answer
    x = 11,192.23

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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.