Home / 13,697.06-18,913.46-8,670.15

Finding the Fourth Proportional to 13,697.06, 18,913.46 and 8,670.15

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Solution

The fourth proportional to 13,697.06, 18,913.46 and 8,670.15 is: 11,972.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,697.06 : 18,913.46 = 8,670.15 : x
  2. Step 2: Convert to fraction form
    13,697.06/18,913.46 = 8,670.15/x
  3. Step 3: Cross multiply
    13,697.06x = 18,913.46 × 8,670.15
  4. Step 4: Simplify right side
    13,697.06x = 163,982,535.22
  5. Step 5: Solve for x
    x = 163,982,535.22/13,697.06
  6. Step 6: Final answer
    x = 11,972.10

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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.