Home / 13,178.40-19,775.39-4,864.20

Finding the Fourth Proportional to 13,178.40, 19,775.39 and 4,864.20

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Solution

The fourth proportional to 13,178.40, 19,775.39 and 4,864.20 is: 7,299.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.40 : 19,775.39 = 4,864.20 : x
  2. Step 2: Convert to fraction form
    13,178.40/19,775.39 = 4,864.20/x
  3. Step 3: Cross multiply
    13,178.40x = 19,775.39 × 4,864.20
  4. Step 4: Simplify right side
    13,178.40x = 96,191,452.04
  5. Step 5: Solve for x
    x = 96,191,452.04/13,178.40
  6. Step 6: Final answer
    x = 7,299.18

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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.