Home / 10,909.23-15,053.81-6,128.80

Finding the Fourth Proportional to 10,909.23, 15,053.81 and 6,128.80

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Solution

The fourth proportional to 10,909.23, 15,053.81 and 6,128.80 is: 8,457.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,909.23 : 15,053.81 = 6,128.80 : x
  2. Step 2: Convert to fraction form
    10,909.23/15,053.81 = 6,128.80/x
  3. Step 3: Cross multiply
    10,909.23x = 15,053.81 × 6,128.80
  4. Step 4: Simplify right side
    10,909.23x = 92,261,795.33
  5. Step 5: Solve for x
    x = 92,261,795.33/10,909.23
  6. Step 6: Final answer
    x = 8,457.22

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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.