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Finding the Fourth Proportional to 28,055.81, 42,090.65 and 8,334.34

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Solution

The fourth proportional to 28,055.81, 42,090.65 and 8,334.34 is: 12,503.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,055.81 : 42,090.65 = 8,334.34 : x
  2. Step 2: Convert to fraction form
    28,055.81/42,090.65 = 8,334.34/x
  3. Step 3: Cross multiply
    28,055.81x = 42,090.65 × 8,334.34
  4. Step 4: Simplify right side
    28,055.81x = 350,797,703.53
  5. Step 5: Solve for x
    x = 350,797,703.53/28,055.81
  6. Step 6: Final answer
    x = 12,503.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.