Home / 39,820.74-59,740.83-12,118.74

Finding the Fourth Proportional to 39,820.74, 59,740.83 and 12,118.74

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Solution

The fourth proportional to 39,820.74, 59,740.83 and 12,118.74 is: 18,181.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,820.74 : 59,740.83 = 12,118.74 : x
  2. Step 2: Convert to fraction form
    39,820.74/59,740.83 = 12,118.74/x
  3. Step 3: Cross multiply
    39,820.74x = 59,740.83 × 12,118.74
  4. Step 4: Simplify right side
    39,820.74x = 723,983,586.15
  5. Step 5: Solve for x
    x = 723,983,586.15/39,820.74
  6. Step 6: Final answer
    x = 18,181.07

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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.