Home / 13,748.48-18,958.56-8,158.40

Finding the Fourth Proportional to 13,748.48, 18,958.56 and 8,158.40

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Solution

The fourth proportional to 13,748.48, 18,958.56 and 8,158.40 is: 11,250.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,748.48 : 18,958.56 = 8,158.40 : x
  2. Step 2: Convert to fraction form
    13,748.48/18,958.56 = 8,158.40/x
  3. Step 3: Cross multiply
    13,748.48x = 18,958.56 × 8,158.40
  4. Step 4: Simplify right side
    13,748.48x = 154,671,515.90
  5. Step 5: Solve for x
    x = 154,671,515.90/13,748.48
  6. Step 6: Final answer
    x = 11,250.08

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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.