Home / 13,020.48-19,538.01-7,178.76

Finding the Fourth Proportional to 13,020.48, 19,538.01 and 7,178.76

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Solution

The fourth proportional to 13,020.48, 19,538.01 and 7,178.76 is: 10,772.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,020.48 : 19,538.01 = 7,178.76 : x
  2. Step 2: Convert to fraction form
    13,020.48/19,538.01 = 7,178.76/x
  3. Step 3: Cross multiply
    13,020.48x = 19,538.01 × 7,178.76
  4. Step 4: Simplify right side
    13,020.48x = 140,258,684.67
  5. Step 5: Solve for x
    x = 140,258,684.67/13,020.48
  6. Step 6: Final answer
    x = 10,772.16

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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.