Home / 13,416.25-18,516.35-8,038.90

Finding the Fourth Proportional to 13,416.25, 18,516.35 and 8,038.90

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Solution

The fourth proportional to 13,416.25, 18,516.35 and 8,038.90 is: 11,094.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.25 : 18,516.35 = 8,038.90 : x
  2. Step 2: Convert to fraction form
    13,416.25/18,516.35 = 8,038.90/x
  3. Step 3: Cross multiply
    13,416.25x = 18,516.35 × 8,038.90
  4. Step 4: Simplify right side
    13,416.25x = 148,851,086.02
  5. Step 5: Solve for x
    x = 148,851,086.02/13,416.25
  6. Step 6: Final answer
    x = 11,094.84

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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.