Home / 30,355.90-45,533.85-8,169.32

Finding the Fourth Proportional to 30,355.90, 45,533.85 and 8,169.32

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Solution

The fourth proportional to 30,355.90, 45,533.85 and 8,169.32 is: 12,253.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,355.90 : 45,533.85 = 8,169.32 : x
  2. Step 2: Convert to fraction form
    30,355.90/45,533.85 = 8,169.32/x
  3. Step 3: Cross multiply
    30,355.90x = 45,533.85 × 8,169.32
  4. Step 4: Simplify right side
    30,355.90x = 371,980,674.68
  5. Step 5: Solve for x
    x = 371,980,674.68/30,355.90
  6. Step 6: Final answer
    x = 12,253.98

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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.