Home / 43,643.59-65,465.40-12,478.84

Finding the Fourth Proportional to 43,643.59, 65,465.40 and 12,478.84

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Solution

The fourth proportional to 43,643.59, 65,465.40 and 12,478.84 is: 18,718.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,643.59 : 65,465.40 = 12,478.84 : x
  2. Step 2: Convert to fraction form
    43,643.59/65,465.40 = 12,478.84/x
  3. Step 3: Cross multiply
    43,643.59x = 65,465.40 × 12,478.84
  4. Step 4: Simplify right side
    43,643.59x = 816,932,252.14
  5. Step 5: Solve for x
    x = 816,932,252.14/43,643.59
  6. Step 6: Final answer
    x = 18,718.26

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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.