Home / 42,919.11-64,378.67-13,329

Finding the Fourth Proportional to 42,919.11, 64,378.67 and 13,329

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Solution

The fourth proportional to 42,919.11, 64,378.67 and 13,329 is: 19,993.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,919.11 : 64,378.67 = 13,329 : x
  2. Step 2: Convert to fraction form
    42,919.11/64,378.67 = 13,329/x
  3. Step 3: Cross multiply
    42,919.11x = 64,378.67 × 13,329
  4. Step 4: Simplify right side
    42,919.11x = 858,103,225.79
  5. Step 5: Solve for x
    x = 858,103,225.79/42,919.11
  6. Step 6: Final answer
    x = 19,993.50

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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.