Home / 13,307.90-18,373.46-8,278.97

Finding the Fourth Proportional to 13,307.90, 18,373.46 and 8,278.97

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Solution

The fourth proportional to 13,307.90, 18,373.46 and 8,278.97 is: 11,430.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,307.90 : 18,373.46 = 8,278.97 : x
  2. Step 2: Convert to fraction form
    13,307.90/18,373.46 = 8,278.97/x
  3. Step 3: Cross multiply
    13,307.90x = 18,373.46 × 8,278.97
  4. Step 4: Simplify right side
    13,307.90x = 152,113,190.87
  5. Step 5: Solve for x
    x = 152,113,190.87/13,307.90
  6. Step 6: Final answer
    x = 11,430.30

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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.