Home / 47,412.12-71,118.20-12,355.32

Finding the Fourth Proportional to 47,412.12, 71,118.20 and 12,355.32

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Solution

The fourth proportional to 47,412.12, 71,118.20 and 12,355.32 is: 18,532.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,412.12 : 71,118.20 = 12,355.32 : x
  2. Step 2: Convert to fraction form
    47,412.12/71,118.20 = 12,355.32/x
  3. Step 3: Cross multiply
    47,412.12x = 71,118.20 × 12,355.32
  4. Step 4: Simplify right side
    47,412.12x = 878,688,118.82
  5. Step 5: Solve for x
    x = 878,688,118.82/47,412.12
  6. Step 6: Final answer
    x = 18,532.99

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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.