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Finding the Fourth Proportional to 14,558.79, 20,090.48 and 8,903.01

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Solution

The fourth proportional to 14,558.79, 20,090.48 and 8,903.01 is: 12,285.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,558.79 : 20,090.48 = 8,903.01 : x
  2. Step 2: Convert to fraction form
    14,558.79/20,090.48 = 8,903.01/x
  3. Step 3: Cross multiply
    14,558.79x = 20,090.48 × 8,903.01
  4. Step 4: Simplify right side
    14,558.79x = 178,865,825.25
  5. Step 5: Solve for x
    x = 178,865,825.25/14,558.79
  6. Step 6: Final answer
    x = 12,285.76

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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.