Home / 28,988.07-43,404.16-18,400.78

Finding the Fourth Proportional to 28,988.07, 43,404.16 and 18,400.78

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Solution

The fourth proportional to 28,988.07, 43,404.16 and 18,400.78 is: 27,551.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,988.07 : 43,404.16 = 18,400.78 : x
  2. Step 2: Convert to fraction form
    28,988.07/43,404.16 = 18,400.78/x
  3. Step 3: Cross multiply
    28,988.07x = 43,404.16 × 18,400.78
  4. Step 4: Simplify right side
    28,988.07x = 798,670,313.74
  5. Step 5: Solve for x
    x = 798,670,313.74/28,988.07
  6. Step 6: Final answer
    x = 27,551.69

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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.