Home / 13,697.40-20,529.06-7,119.72

Finding the Fourth Proportional to 13,697.40, 20,529.06 and 7,119.72

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Solution

The fourth proportional to 13,697.40, 20,529.06 and 7,119.72 is: 10,670.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,697.40 : 20,529.06 = 7,119.72 : x
  2. Step 2: Convert to fraction form
    13,697.40/20,529.06 = 7,119.72/x
  3. Step 3: Cross multiply
    13,697.40x = 20,529.06 × 7,119.72
  4. Step 4: Simplify right side
    13,697.40x = 146,161,159.06
  5. Step 5: Solve for x
    x = 146,161,159.06/13,697.40
  6. Step 6: Final answer
    x = 10,670.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.