Home / 20,439.62-30,669.16-9,345.46

Finding the Fourth Proportional to 20,439.62, 30,669.16 and 9,345.46

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Solution

The fourth proportional to 20,439.62, 30,669.16 and 9,345.46 is: 14,022.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.62 : 30,669.16 = 9,345.46 : x
  2. Step 2: Convert to fraction form
    20,439.62/30,669.16 = 9,345.46/x
  3. Step 3: Cross multiply
    20,439.62x = 30,669.16 × 9,345.46
  4. Step 4: Simplify right side
    20,439.62x = 286,617,307.98
  5. Step 5: Solve for x
    x = 286,617,307.98/20,439.62
  6. Step 6: Final answer
    x = 14,022.63

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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.