Home / 14,431.68-21,685.32-12,587.40

Finding the Fourth Proportional to 14,431.68, 21,685.32 and 12,587.40

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Solution

The fourth proportional to 14,431.68, 21,685.32 and 12,587.40 is: 18,914.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,431.68 : 21,685.32 = 12,587.40 : x
  2. Step 2: Convert to fraction form
    14,431.68/21,685.32 = 12,587.40/x
  3. Step 3: Cross multiply
    14,431.68x = 21,685.32 × 12,587.40
  4. Step 4: Simplify right side
    14,431.68x = 272,961,796.97
  5. Step 5: Solve for x
    x = 272,961,796.97/14,431.68
  6. Step 6: Final answer
    x = 18,914.07

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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.