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Finding the Fourth Proportional to 15,130.89, 20,877.54 and 8,842.05

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Solution

The fourth proportional to 15,130.89, 20,877.54 and 8,842.05 is: 12,200.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,130.89 : 20,877.54 = 8,842.05 : x
  2. Step 2: Convert to fraction form
    15,130.89/20,877.54 = 8,842.05/x
  3. Step 3: Cross multiply
    15,130.89x = 20,877.54 × 8,842.05
  4. Step 4: Simplify right side
    15,130.89x = 184,600,252.56
  5. Step 5: Solve for x
    x = 184,600,252.56/15,130.89
  6. Step 6: Final answer
    x = 12,200.22

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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.